Home / 21,199.60-29,237.88-15,906.16

Finding the Fourth Proportional to 21,199.60, 29,237.88 and 15,906.16

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Solution

The fourth proportional to 21,199.60, 29,237.88 and 15,906.16 is: 21,937.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.60 : 29,237.88 = 15,906.16 : x
  2. Step 2: Convert to fraction form
    21,199.60/29,237.88 = 15,906.16/x
  3. Step 3: Cross multiply
    21,199.60x = 29,237.88 × 15,906.16
  4. Step 4: Simplify right side
    21,199.60x = 465,062,397.34
  5. Step 5: Solve for x
    x = 465,062,397.34/21,199.60
  6. Step 6: Final answer
    x = 21,937.32

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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.