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Finding the Fourth Proportional to 18,429.58, 25,432 and 10,471.69

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Solution

The fourth proportional to 18,429.58, 25,432 and 10,471.69 is: 14,450.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.58 : 25,432 = 10,471.69 : x
  2. Step 2: Convert to fraction form
    18,429.58/25,432 = 10,471.69/x
  3. Step 3: Cross multiply
    18,429.58x = 25,432 × 10,471.69
  4. Step 4: Simplify right side
    18,429.58x = 266,316,020.08
  5. Step 5: Solve for x
    x = 266,316,020.08/18,429.58
  6. Step 6: Final answer
    x = 14,450.47

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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.