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Finding the Fourth Proportional to 26,689.60, 40,000.80 and 13,545.60

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Solution

The fourth proportional to 26,689.60, 40,000.80 and 13,545.60 is: 20,301.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,689.60 : 40,000.80 = 13,545.60 : x
  2. Step 2: Convert to fraction form
    26,689.60/40,000.80 = 13,545.60/x
  3. Step 3: Cross multiply
    26,689.60x = 40,000.80 × 13,545.60
  4. Step 4: Simplify right side
    26,689.60x = 541,834,836.48
  5. Step 5: Solve for x
    x = 541,834,836.48/26,689.60
  6. Step 6: Final answer
    x = 20,301.35

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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.