Home / 21,250.26-29,332.66-12,866.76

Finding the Fourth Proportional to 21,250.26, 29,332.66 and 12,866.76

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Solution

The fourth proportional to 21,250.26, 29,332.66 and 12,866.76 is: 17,760.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.26 : 29,332.66 = 12,866.76 : x
  2. Step 2: Convert to fraction form
    21,250.26/29,332.66 = 12,866.76/x
  3. Step 3: Cross multiply
    21,250.26x = 29,332.66 × 12,866.76
  4. Step 4: Simplify right side
    21,250.26x = 377,416,296.38
  5. Step 5: Solve for x
    x = 377,416,296.38/21,250.26
  6. Step 6: Final answer
    x = 17,760.55

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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.