Home / 13,545.91-20,358.96-13,177.76

Finding the Fourth Proportional to 13,545.91, 20,358.96 and 13,177.76

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Solution

The fourth proportional to 13,545.91, 20,358.96 and 13,177.76 is: 19,805.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.91 : 20,358.96 = 13,177.76 : x
  2. Step 2: Convert to fraction form
    13,545.91/20,358.96 = 13,177.76/x
  3. Step 3: Cross multiply
    13,545.91x = 20,358.96 × 13,177.76
  4. Step 4: Simplify right side
    13,545.91x = 268,285,488.73
  5. Step 5: Solve for x
    x = 268,285,488.73/13,545.91
  6. Step 6: Final answer
    x = 19,805.65

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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.