Home / 20,545.76-28,353.02-11,114.40

Finding the Fourth Proportional to 20,545.76, 28,353.02 and 11,114.40

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Solution

The fourth proportional to 20,545.76, 28,353.02 and 11,114.40 is: 15,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.76 : 28,353.02 = 11,114.40 : x
  2. Step 2: Convert to fraction form
    20,545.76/28,353.02 = 11,114.40/x
  3. Step 3: Cross multiply
    20,545.76x = 28,353.02 × 11,114.40
  4. Step 4: Simplify right side
    20,545.76x = 315,126,805.49
  5. Step 5: Solve for x
    x = 315,126,805.49/20,545.76
  6. Step 6: Final answer
    x = 15,337.80

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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.