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Finding the Fourth Proportional to 18,463.50, 25,479.72 and 10,080

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Solution

The fourth proportional to 18,463.50, 25,479.72 and 10,080 is: 13,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,463.50 : 25,479.72 = 10,080 : x
  2. Step 2: Convert to fraction form
    18,463.50/25,479.72 = 10,080/x
  3. Step 3: Cross multiply
    18,463.50x = 25,479.72 × 10,080
  4. Step 4: Simplify right side
    18,463.50x = 256,835,577.60
  5. Step 5: Solve for x
    x = 256,835,577.60/18,463.50
  6. Step 6: Final answer
    x = 13,910.45

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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.