Home / 31,897.86-47,815.56-11,892.71

Finding the Fourth Proportional to 31,897.86, 47,815.56 and 11,892.71

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Solution

The fourth proportional to 31,897.86, 47,815.56 and 11,892.71 is: 17,827.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,897.86 : 47,815.56 = 11,892.71 : x
  2. Step 2: Convert to fraction form
    31,897.86/47,815.56 = 11,892.71/x
  3. Step 3: Cross multiply
    31,897.86x = 47,815.56 × 11,892.71
  4. Step 4: Simplify right side
    31,897.86x = 568,656,349.49
  5. Step 5: Solve for x
    x = 568,656,349.49/31,897.86
  6. Step 6: Final answer
    x = 17,827.41

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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.