Home / 20,174.40-30,272.40-8,488.80

Finding the Fourth Proportional to 20,174.40, 30,272.40 and 8,488.80

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Solution

The fourth proportional to 20,174.40, 30,272.40 and 8,488.80 is: 12,737.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.40 : 30,272.40 = 8,488.80 : x
  2. Step 2: Convert to fraction form
    20,174.40/30,272.40 = 8,488.80/x
  3. Step 3: Cross multiply
    20,174.40x = 30,272.40 × 8,488.80
  4. Step 4: Simplify right side
    20,174.40x = 256,976,349.12
  5. Step 5: Solve for x
    x = 256,976,349.12/20,174.40
  6. Step 6: Final answer
    x = 12,737.74

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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.