Home / 10,545.60-15,818.40-2,755.20

Finding the Fourth Proportional to 10,545.60, 15,818.40 and 2,755.20

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Solution

The fourth proportional to 10,545.60, 15,818.40 and 2,755.20 is: 4,132.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,545.60 : 15,818.40 = 2,755.20 : x
  2. Step 2: Convert to fraction form
    10,545.60/15,818.40 = 2,755.20/x
  3. Step 3: Cross multiply
    10,545.60x = 15,818.40 × 2,755.20
  4. Step 4: Simplify right side
    10,545.60x = 43,582,855.68
  5. Step 5: Solve for x
    x = 43,582,855.68/10,545.60
  6. Step 6: Final answer
    x = 4,132.80

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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.