Home / 38,220.78-52,742.89-21,226.11

Finding the Fourth Proportional to 38,220.78, 52,742.89 and 21,226.11

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Solution

The fourth proportional to 38,220.78, 52,742.89 and 21,226.11 is: 29,291.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,220.78 : 52,742.89 = 21,226.11 : x
  2. Step 2: Convert to fraction form
    38,220.78/52,742.89 = 21,226.11/x
  3. Step 3: Cross multiply
    38,220.78x = 52,742.89 × 21,226.11
  4. Step 4: Simplify right side
    38,220.78x = 1,119,526,384.86
  5. Step 5: Solve for x
    x = 1,119,526,384.86/38,220.78
  6. Step 6: Final answer
    x = 29,291.04

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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.