Home / 31,911.60-47,892.90-14,382.78

Finding the Fourth Proportional to 31,911.60, 47,892.90 and 14,382.78

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Solution

The fourth proportional to 31,911.60, 47,892.90 and 14,382.78 is: 21,585.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,911.60 : 47,892.90 = 14,382.78 : x
  2. Step 2: Convert to fraction form
    31,911.60/47,892.90 = 14,382.78/x
  3. Step 3: Cross multiply
    31,911.60x = 47,892.90 × 14,382.78
  4. Step 4: Simplify right side
    31,911.60x = 688,833,044.26
  5. Step 5: Solve for x
    x = 688,833,044.26/31,911.60
  6. Step 6: Final answer
    x = 21,585.66

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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.