Home / 21,439.62-29,588.04-12,008.76

Finding the Fourth Proportional to 21,439.62, 29,588.04 and 12,008.76

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Solution

The fourth proportional to 21,439.62, 29,588.04 and 12,008.76 is: 16,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.62 : 29,588.04 = 12,008.76 : x
  2. Step 2: Convert to fraction form
    21,439.62/29,588.04 = 12,008.76/x
  3. Step 3: Cross multiply
    21,439.62x = 29,588.04 × 12,008.76
  4. Step 4: Simplify right side
    21,439.62x = 355,315,671.23
  5. Step 5: Solve for x
    x = 355,315,671.23/21,439.62
  6. Step 6: Final answer
    x = 16,572.85

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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.