Home / 20,755,161,656.80-31,132,742,485.20-20,561,669,893.60

Finding the Fourth Proportional to 20,755,161,656.80, 31,132,742,485.20 and 20,561,669,893.60

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Solution

The fourth proportional to 20,755,161,656.80, 31,132,742,485.20 and 20,561,669,893.60 is: 30,842,504,840.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755,161,656.80 : 31,132,742,485.20 = 20,561,669,893.60 : x
  2. Step 2: Convert to fraction form
    20,755,161,656.80/31,132,742,485.20 = 20,561,669,893.60/x
  3. Step 3: Cross multiply
    20,755,161,656.80x = 31,132,742,485.20 × 20,561,669,893.60
  4. Step 4: Simplify right side
    20,755,161,656.80x = 640,141,173,863,138,459,648
  5. Step 5: Solve for x
    x = 640,141,173,863,138,459,648/20,755,161,656.80
  6. Step 6: Final answer
    x = 30,842,504,840.40

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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.