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Finding the Fourth Proportional to 10,545.60, 15,796.80 and 5,354.40

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Solution

The fourth proportional to 10,545.60, 15,796.80 and 5,354.40 is: 8,020.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,545.60 : 15,796.80 = 5,354.40 : x
  2. Step 2: Convert to fraction form
    10,545.60/15,796.80 = 5,354.40/x
  3. Step 3: Cross multiply
    10,545.60x = 15,796.80 × 5,354.40
  4. Step 4: Simplify right side
    10,545.60x = 84,582,385.92
  5. Step 5: Solve for x
    x = 84,582,385.92/10,545.60
  6. Step 6: Final answer
    x = 8,020.63

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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.