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Finding the Fourth Proportional to 18,376.52, 25,361.24 and 10,421.24

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Solution

The fourth proportional to 18,376.52, 25,361.24 and 10,421.24 is: 14,382.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,376.52 : 25,361.24 = 10,421.24 : x
  2. Step 2: Convert to fraction form
    18,376.52/25,361.24 = 10,421.24/x
  3. Step 3: Cross multiply
    18,376.52x = 25,361.24 × 10,421.24
  4. Step 4: Simplify right side
    18,376.52x = 264,295,389.83
  5. Step 5: Solve for x
    x = 264,295,389.83/18,376.52
  6. Step 6: Final answer
    x = 14,382.24

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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.