Home / 20,755,161,650.80-31,132,742,476.20-20,561,669,887.60

Finding the Fourth Proportional to 20,755,161,650.80, 31,132,742,476.20 and 20,561,669,887.60

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Solution

The fourth proportional to 20,755,161,650.80, 31,132,742,476.20 and 20,561,669,887.60 is: 30,842,504,831.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755,161,650.80 : 31,132,742,476.20 = 20,561,669,887.60 : x
  2. Step 2: Convert to fraction form
    20,755,161,650.80/31,132,742,476.20 = 20,561,669,887.60/x
  3. Step 3: Cross multiply
    20,755,161,650.80x = 31,132,742,476.20 × 20,561,669,887.60
  4. Step 4: Simplify right side
    20,755,161,650.80x = 640,141,173,491,286,933,504
  5. Step 5: Solve for x
    x = 640,141,173,491,286,933,504/20,755,161,650.80
  6. Step 6: Final answer
    x = 30,842,504,831.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.