Home / 21,146.92-29,181.78-11,586.76

Finding the Fourth Proportional to 21,146.92, 29,181.78 and 11,586.76

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Solution

The fourth proportional to 21,146.92, 29,181.78 and 11,586.76 is: 15,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.92 : 29,181.78 = 11,586.76 : x
  2. Step 2: Convert to fraction form
    21,146.92/29,181.78 = 11,586.76/x
  3. Step 3: Cross multiply
    21,146.92x = 29,181.78 × 11,586.76
  4. Step 4: Simplify right side
    21,146.92x = 338,122,281.23
  5. Step 5: Solve for x
    x = 338,122,281.23/21,146.92
  6. Step 6: Final answer
    x = 15,989.20

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Half scale
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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.