Home / 20,336.20-30,503.40-5,545.12

Finding the Fourth Proportional to 20,336.20, 30,503.40 and 5,545.12

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Solution

The fourth proportional to 20,336.20, 30,503.40 and 5,545.12 is: 8,317.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.20 : 30,503.40 = 5,545.12 : x
  2. Step 2: Convert to fraction form
    20,336.20/30,503.40 = 5,545.12/x
  3. Step 3: Cross multiply
    20,336.20x = 30,503.40 × 5,545.12
  4. Step 4: Simplify right side
    20,336.20x = 169,145,013.41
  5. Step 5: Solve for x
    x = 169,145,013.41/20,336.20
  6. Step 6: Final answer
    x = 8,317.43

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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.