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Finding the Fourth Proportional to 18,153.88, 25,046.11 and 11,343.28

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Solution

The fourth proportional to 18,153.88, 25,046.11 and 11,343.28 is: 15,649.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,153.88 : 25,046.11 = 11,343.28 : x
  2. Step 2: Convert to fraction form
    18,153.88/25,046.11 = 11,343.28/x
  3. Step 3: Cross multiply
    18,153.88x = 25,046.11 × 11,343.28
  4. Step 4: Simplify right side
    18,153.88x = 284,105,038.64
  5. Step 5: Solve for x
    x = 284,105,038.64/18,153.88
  6. Step 6: Final answer
    x = 15,649.82

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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.