Home / 21,229.38-29,295.74-11,798.55

Finding the Fourth Proportional to 21,229.38, 29,295.74 and 11,798.55

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Solution

The fourth proportional to 21,229.38, 29,295.74 and 11,798.55 is: 16,281.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.38 : 29,295.74 = 11,798.55 : x
  2. Step 2: Convert to fraction form
    21,229.38/29,295.74 = 11,798.55/x
  3. Step 3: Cross multiply
    21,229.38x = 29,295.74 × 11,798.55
  4. Step 4: Simplify right side
    21,229.38x = 345,647,282.67
  5. Step 5: Solve for x
    x = 345,647,282.67/21,229.38
  6. Step 6: Final answer
    x = 16,281.55

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Half scale
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Double scale
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Similar ratio
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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.