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Finding the Fourth Proportional to 20,545.60, 30,850.80 and 11,797.60

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Solution

The fourth proportional to 20,545.60, 30,850.80 and 11,797.60 is: 17,715.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.60 : 30,850.80 = 11,797.60 : x
  2. Step 2: Convert to fraction form
    20,545.60/30,850.80 = 11,797.60/x
  3. Step 3: Cross multiply
    20,545.60x = 30,850.80 × 11,797.60
  4. Step 4: Simplify right side
    20,545.60x = 363,965,398.08
  5. Step 5: Solve for x
    x = 363,965,398.08/20,545.60
  6. Step 6: Final answer
    x = 17,715.00

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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.