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Finding the Fourth Proportional to 18,505.02, 25,536.96 and 10,121.52

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Solution

The fourth proportional to 18,505.02, 25,536.96 and 10,121.52 is: 13,967.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,505.02 : 25,536.96 = 10,121.52 : x
  2. Step 2: Convert to fraction form
    18,505.02/25,536.96 = 10,121.52/x
  3. Step 3: Cross multiply
    18,505.02x = 25,536.96 × 10,121.52
  4. Step 4: Simplify right side
    18,505.02x = 258,472,851.38
  5. Step 5: Solve for x
    x = 258,472,851.38/18,505.02
  6. Step 6: Final answer
    x = 13,967.72

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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.