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Finding the Fourth Proportional to 18,387.44, 25,400.28 and 17,704.68

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Solution

The fourth proportional to 18,387.44, 25,400.28 and 17,704.68 is: 24,457.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.44 : 25,400.28 = 17,704.68 : x
  2. Step 2: Convert to fraction form
    18,387.44/25,400.28 = 17,704.68/x
  3. Step 3: Cross multiply
    18,387.44x = 25,400.28 × 17,704.68
  4. Step 4: Simplify right side
    18,387.44x = 449,703,829.31
  5. Step 5: Solve for x
    x = 449,703,829.31/18,387.44
  6. Step 6: Final answer
    x = 24,457.13

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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.