Home / 20,679,081.09-28,537,343.10-11,387,515.20

Finding the Fourth Proportional to 20,679,081.09, 28,537,343.10 and 11,387,515.20

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Solution

The fourth proportional to 20,679,081.09, 28,537,343.10 and 11,387,515.20 is: 15,714,887.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679,081.09 : 28,537,343.10 = 11,387,515.20 : x
  2. Step 2: Convert to fraction form
    20,679,081.09/28,537,343.10 = 11,387,515.20/x
  3. Step 3: Cross multiply
    20,679,081.09x = 28,537,343.10 × 11,387,515.20
  4. Step 4: Simplify right side
    20,679,081.09x = 324,969,428,318,865.12
  5. Step 5: Solve for x
    x = 324,969,428,318,865.12/20,679,081.09
  6. Step 6: Final answer
    x = 15,714,887.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.