Home / 22,147.76-30,557.36-13,190.80

Finding the Fourth Proportional to 22,147.76, 30,557.36 and 13,190.80

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Solution

The fourth proportional to 22,147.76, 30,557.36 and 13,190.80 is: 18,199.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,147.76 : 30,557.36 = 13,190.80 : x
  2. Step 2: Convert to fraction form
    22,147.76/30,557.36 = 13,190.80/x
  3. Step 3: Cross multiply
    22,147.76x = 30,557.36 × 13,190.80
  4. Step 4: Simplify right side
    22,147.76x = 403,076,024.29
  5. Step 5: Solve for x
    x = 403,076,024.29/22,147.76
  6. Step 6: Final answer
    x = 18,199.40

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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.