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Finding the Fourth Proportional to 18,153.30, 25,042.53 and 15,760.02

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Solution

The fourth proportional to 18,153.30, 25,042.53 and 15,760.02 is: 21,740.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,153.30 : 25,042.53 = 15,760.02 : x
  2. Step 2: Convert to fraction form
    18,153.30/25,042.53 = 15,760.02/x
  3. Step 3: Cross multiply
    18,153.30x = 25,042.53 × 15,760.02
  4. Step 4: Simplify right side
    18,153.30x = 394,670,773.65
  5. Step 5: Solve for x
    x = 394,670,773.65/18,153.30
  6. Step 6: Final answer
    x = 21,740.99

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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.