Home / 20,720,102.40-31,080,153.60-10,642,406.40

Finding the Fourth Proportional to 20,720,102.40, 31,080,153.60 and 10,642,406.40

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Solution

The fourth proportional to 20,720,102.40, 31,080,153.60 and 10,642,406.40 is: 15,963,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720,102.40 : 31,080,153.60 = 10,642,406.40 : x
  2. Step 2: Convert to fraction form
    20,720,102.40/31,080,153.60 = 10,642,406.40/x
  3. Step 3: Cross multiply
    20,720,102.40x = 31,080,153.60 × 10,642,406.40
  4. Step 4: Simplify right side
    20,720,102.40x = 330,767,625,585,623.06
  5. Step 5: Solve for x
    x = 330,767,625,585,623.06/20,720,102.40
  6. Step 6: Final answer
    x = 15,963,609.60

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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.