Home / 20,932.47-31,402.65-13,484.52

Finding the Fourth Proportional to 20,932.47, 31,402.65 and 13,484.52

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Solution

The fourth proportional to 20,932.47, 31,402.65 and 13,484.52 is: 20,229.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.47 : 31,402.65 = 13,484.52 : x
  2. Step 2: Convert to fraction form
    20,932.47/31,402.65 = 13,484.52/x
  3. Step 3: Cross multiply
    20,932.47x = 31,402.65 × 13,484.52
  4. Step 4: Simplify right side
    20,932.47x = 423,449,661.98
  5. Step 5: Solve for x
    x = 423,449,661.98/20,932.47
  6. Step 6: Final answer
    x = 20,229.32

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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.