Home / 28,251.78-42,350.10-13,456.74

Finding the Fourth Proportional to 28,251.78, 42,350.10 and 13,456.74

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Solution

The fourth proportional to 28,251.78, 42,350.10 and 13,456.74 is: 20,171.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.78 : 42,350.10 = 13,456.74 : x
  2. Step 2: Convert to fraction form
    28,251.78/42,350.10 = 13,456.74/x
  3. Step 3: Cross multiply
    28,251.78x = 42,350.10 × 13,456.74
  4. Step 4: Simplify right side
    28,251.78x = 569,894,284.67
  5. Step 5: Solve for x
    x = 569,894,284.67/28,251.78
  6. Step 6: Final answer
    x = 20,171.98

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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.