Home / 18,545.28-27,820.80-8,685.44

Finding the Fourth Proportional to 18,545.28, 27,820.80 and 8,685.44

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Solution

The fourth proportional to 18,545.28, 27,820.80 and 8,685.44 is: 13,029.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,545.28 : 27,820.80 = 8,685.44 : x
  2. Step 2: Convert to fraction form
    18,545.28/27,820.80 = 8,685.44/x
  3. Step 3: Cross multiply
    18,545.28x = 27,820.80 × 8,685.44
  4. Step 4: Simplify right side
    18,545.28x = 241,635,889.15
  5. Step 5: Solve for x
    x = 241,635,889.15/18,545.28
  6. Step 6: Final answer
    x = 13,029.51

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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.