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Finding the Fourth Proportional to 12,040.78, 18,061.17 and 3,276.99

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Solution

The fourth proportional to 12,040.78, 18,061.17 and 3,276.99 is: 4,915.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,040.78 : 18,061.17 = 3,276.99 : x
  2. Step 2: Convert to fraction form
    12,040.78/18,061.17 = 3,276.99/x
  3. Step 3: Cross multiply
    12,040.78x = 18,061.17 × 3,276.99
  4. Step 4: Simplify right side
    12,040.78x = 59,186,273.48
  5. Step 5: Solve for x
    x = 59,186,273.48/12,040.78
  6. Step 6: Final answer
    x = 4,915.49

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.