Home / 28,400.64-39,192.92-16,470.92

Finding the Fourth Proportional to 28,400.64, 39,192.92 and 16,470.92

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Solution

The fourth proportional to 28,400.64, 39,192.92 and 16,470.92 is: 22,729.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,400.64 : 39,192.92 = 16,470.92 : x
  2. Step 2: Convert to fraction form
    28,400.64/39,192.92 = 16,470.92/x
  3. Step 3: Cross multiply
    28,400.64x = 39,192.92 × 16,470.92
  4. Step 4: Simplify right side
    28,400.64x = 645,543,449.89
  5. Step 5: Solve for x
    x = 645,543,449.89/28,400.64
  6. Step 6: Final answer
    x = 22,729.89

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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.