Home / 12,519.50-17,280.76-7,217.86

Finding the Fourth Proportional to 12,519.50, 17,280.76 and 7,217.86

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Solution

The fourth proportional to 12,519.50, 17,280.76 and 7,217.86 is: 9,962.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.50 : 17,280.76 = 7,217.86 : x
  2. Step 2: Convert to fraction form
    12,519.50/17,280.76 = 7,217.86/x
  3. Step 3: Cross multiply
    12,519.50x = 17,280.76 × 7,217.86
  4. Step 4: Simplify right side
    12,519.50x = 124,730,106.37
  5. Step 5: Solve for x
    x = 124,730,106.37/12,519.50
  6. Step 6: Final answer
    x = 9,962.87

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Double scale
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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.