Home / 15,441.30-21,294.90-11,221.20

Finding the Fourth Proportional to 15,441.30, 21,294.90 and 11,221.20

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Solution

The fourth proportional to 15,441.30, 21,294.90 and 11,221.20 is: 15,475.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,441.30 : 21,294.90 = 11,221.20 : x
  2. Step 2: Convert to fraction form
    15,441.30/21,294.90 = 11,221.20/x
  3. Step 3: Cross multiply
    15,441.30x = 21,294.90 × 11,221.20
  4. Step 4: Simplify right side
    15,441.30x = 238,954,331.88
  5. Step 5: Solve for x
    x = 238,954,331.88/15,441.30
  6. Step 6: Final answer
    x = 15,475.01

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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.