Home / 15,538,343.20-21,456,453.12-9,747,079.60

Finding the Fourth Proportional to 15,538,343.20, 21,456,453.12 and 9,747,079.60

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Solution

The fourth proportional to 15,538,343.20, 21,456,453.12 and 9,747,079.60 is: 13,459,463.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538,343.20 : 21,456,453.12 = 9,747,079.60 : x
  2. Step 2: Convert to fraction form
    15,538,343.20/21,456,453.12 = 9,747,079.60/x
  3. Step 3: Cross multiply
    15,538,343.20x = 21,456,453.12 × 9,747,079.60
  4. Step 4: Simplify right side
    15,538,343.20x = 209,137,756,494,308.34
  5. Step 5: Solve for x
    x = 209,137,756,494,308.34/15,538,343.20
  6. Step 6: Final answer
    x = 13,459,463.07

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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.