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Finding the Fourth Proportional to 20,062.70, 30,115.65 and 11,314.70

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Solution

The fourth proportional to 20,062.70, 30,115.65 and 11,314.70 is: 16,984.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,062.70 : 30,115.65 = 11,314.70 : x
  2. Step 2: Convert to fraction form
    20,062.70/30,115.65 = 11,314.70/x
  3. Step 3: Cross multiply
    20,062.70x = 30,115.65 × 11,314.70
  4. Step 4: Simplify right side
    20,062.70x = 340,749,545.06
  5. Step 5: Solve for x
    x = 340,749,545.06/20,062.70
  6. Step 6: Final answer
    x = 16,984.23

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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.