Home / 28,326.18-42,489.27-13,490.12

Finding the Fourth Proportional to 28,326.18, 42,489.27 and 13,490.12

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Solution

The fourth proportional to 28,326.18, 42,489.27 and 13,490.12 is: 20,235.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,326.18 : 42,489.27 = 13,490.12 : x
  2. Step 2: Convert to fraction form
    28,326.18/42,489.27 = 13,490.12/x
  3. Step 3: Cross multiply
    28,326.18x = 42,489.27 × 13,490.12
  4. Step 4: Simplify right side
    28,326.18x = 573,185,138.57
  5. Step 5: Solve for x
    x = 573,185,138.57/28,326.18
  6. Step 6: Final answer
    x = 20,235.17

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Similar ratio
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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.