Home / 20,545.68-28,353.60-12,162.18

Finding the Fourth Proportional to 20,545.68, 28,353.60 and 12,162.18

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Solution

The fourth proportional to 20,545.68, 28,353.60 and 12,162.18 is: 16,784.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.68 : 28,353.60 = 12,162.18 : x
  2. Step 2: Convert to fraction form
    20,545.68/28,353.60 = 12,162.18/x
  3. Step 3: Cross multiply
    20,545.68x = 28,353.60 × 12,162.18
  4. Step 4: Simplify right side
    20,545.68x = 344,841,586.85
  5. Step 5: Solve for x
    x = 344,841,586.85/20,545.68
  6. Step 6: Final answer
    x = 16,784.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.