Home / 31,146.59-42,981.65-16,999.43

Finding the Fourth Proportional to 31,146.59, 42,981.65 and 16,999.43

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Solution

The fourth proportional to 31,146.59, 42,981.65 and 16,999.43 is: 23,458.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,146.59 : 42,981.65 = 16,999.43 : x
  2. Step 2: Convert to fraction form
    31,146.59/42,981.65 = 16,999.43/x
  3. Step 3: Cross multiply
    31,146.59x = 42,981.65 × 16,999.43
  4. Step 4: Simplify right side
    31,146.59x = 730,663,550.46
  5. Step 5: Solve for x
    x = 730,663,550.46/31,146.59
  6. Step 6: Final answer
    x = 23,458.86

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1.5x scale

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.