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Finding the Fourth Proportional to 18,371.44, 25,287.24 and 15,354.16

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Solution

The fourth proportional to 18,371.44, 25,287.24 and 15,354.16 is: 21,134.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,371.44 : 25,287.24 = 15,354.16 : x
  2. Step 2: Convert to fraction form
    18,371.44/25,287.24 = 15,354.16/x
  3. Step 3: Cross multiply
    18,371.44x = 25,287.24 × 15,354.16
  4. Step 4: Simplify right side
    18,371.44x = 388,264,328.92
  5. Step 5: Solve for x
    x = 388,264,328.92/18,371.44
  6. Step 6: Final answer
    x = 21,134.13

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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.