Home / 29,305.78-40,442-15,877.13

Finding the Fourth Proportional to 29,305.78, 40,442 and 15,877.13

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Solution

The fourth proportional to 29,305.78, 40,442 and 15,877.13 is: 21,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,305.78 : 40,442 = 15,877.13 : x
  2. Step 2: Convert to fraction form
    29,305.78/40,442 = 15,877.13/x
  3. Step 3: Cross multiply
    29,305.78x = 40,442 × 15,877.13
  4. Step 4: Simplify right side
    29,305.78x = 642,102,891.46
  5. Step 5: Solve for x
    x = 642,102,891.46/29,305.78
  6. Step 6: Final answer
    x = 21,910.45

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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.