Home / 20,423.20-30,659.10-11,545.60

Finding the Fourth Proportional to 20,423.20, 30,659.10 and 11,545.60

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Solution

The fourth proportional to 20,423.20, 30,659.10 and 11,545.60 is: 17,332.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.20 : 30,659.10 = 11,545.60 : x
  2. Step 2: Convert to fraction form
    20,423.20/30,659.10 = 11,545.60/x
  3. Step 3: Cross multiply
    20,423.20x = 30,659.10 × 11,545.60
  4. Step 4: Simplify right side
    20,423.20x = 353,977,704.96
  5. Step 5: Solve for x
    x = 353,977,704.96/20,423.20
  6. Step 6: Final answer
    x = 17,332.14

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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.