Home / 15,216,123.78-20,986,007.01-13,376,649.02

Finding the Fourth Proportional to 15,216,123.78, 20,986,007.01 and 13,376,649.02

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Solution

The fourth proportional to 15,216,123.78, 20,986,007.01 and 13,376,649.02 is: 18,449,011.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216,123.78 : 20,986,007.01 = 13,376,649.02 : x
  2. Step 2: Convert to fraction form
    15,216,123.78/20,986,007.01 = 13,376,649.02/x
  3. Step 3: Cross multiply
    15,216,123.78x = 20,986,007.01 × 13,376,649.02
  4. Step 4: Simplify right side
    15,216,123.78x = 280,722,449,948,937.19
  5. Step 5: Solve for x
    x = 280,722,449,948,937.19/15,216,123.78
  6. Step 6: Final answer
    x = 18,449,011.98

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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.