Home / 21,314.61-31,999.60-16,387.71

Finding the Fourth Proportional to 21,314.61, 31,999.60 and 16,387.71

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Solution

The fourth proportional to 21,314.61, 31,999.60 and 16,387.71 is: 24,602.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.61 : 31,999.60 = 16,387.71 : x
  2. Step 2: Convert to fraction form
    21,314.61/31,999.60 = 16,387.71/x
  3. Step 3: Cross multiply
    21,314.61x = 31,999.60 × 16,387.71
  4. Step 4: Simplify right side
    21,314.61x = 524,400,123.95
  5. Step 5: Solve for x
    x = 524,400,123.95/21,314.61
  6. Step 6: Final answer
    x = 24,602.85

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1.5x scale

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.