Home / 22,615.14-31,208.90-12,543.69

Finding the Fourth Proportional to 22,615.14, 31,208.90 and 12,543.69

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Solution

The fourth proportional to 22,615.14, 31,208.90 and 12,543.69 is: 17,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.14 : 31,208.90 = 12,543.69 : x
  2. Step 2: Convert to fraction form
    22,615.14/31,208.90 = 12,543.69/x
  3. Step 3: Cross multiply
    22,615.14x = 31,208.90 × 12,543.69
  4. Step 4: Simplify right side
    22,615.14x = 391,474,766.84
  5. Step 5: Solve for x
    x = 391,474,766.84/22,615.14
  6. Step 6: Final answer
    x = 17,310.30

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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.