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Finding the Fourth Proportional to 20,545.20, 30,799.08 and 7,394.58

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Solution

The fourth proportional to 20,545.20, 30,799.08 and 7,394.58 is: 11,085.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.20 : 30,799.08 = 7,394.58 : x
  2. Step 2: Convert to fraction form
    20,545.20/30,799.08 = 7,394.58/x
  3. Step 3: Cross multiply
    20,545.20x = 30,799.08 × 7,394.58
  4. Step 4: Simplify right side
    20,545.20x = 227,746,260.99
  5. Step 5: Solve for x
    x = 227,746,260.99/20,545.20
  6. Step 6: Final answer
    x = 11,085.13

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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.