Home / 30,251.28-45,363.15-12,711.54

Finding the Fourth Proportional to 30,251.28, 45,363.15 and 12,711.54

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Solution

The fourth proportional to 30,251.28, 45,363.15 and 12,711.54 is: 19,061.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,251.28 : 45,363.15 = 12,711.54 : x
  2. Step 2: Convert to fraction form
    30,251.28/45,363.15 = 12,711.54/x
  3. Step 3: Cross multiply
    30,251.28x = 45,363.15 × 12,711.54
  4. Step 4: Simplify right side
    30,251.28x = 576,635,495.75
  5. Step 5: Solve for x
    x = 576,635,495.75/30,251.28
  6. Step 6: Final answer
    x = 19,061.52

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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.