Home / 31,914.60-47,897.40-14,385.78

Finding the Fourth Proportional to 31,914.60, 47,897.40 and 14,385.78

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Solution

The fourth proportional to 31,914.60, 47,897.40 and 14,385.78 is: 21,590.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,914.60 : 47,897.40 = 14,385.78 : x
  2. Step 2: Convert to fraction form
    31,914.60/47,897.40 = 14,385.78/x
  3. Step 3: Cross multiply
    31,914.60x = 47,897.40 × 14,385.78
  4. Step 4: Simplify right side
    31,914.60x = 689,041,458.97
  5. Step 5: Solve for x
    x = 689,041,458.97/31,914.60
  6. Step 6: Final answer
    x = 21,590.16

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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.