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Finding the Fourth Proportional to 18,115.12, 25,001.04 and 11,042.56

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Solution

The fourth proportional to 18,115.12, 25,001.04 and 11,042.56 is: 15,240.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.12 : 25,001.04 = 11,042.56 : x
  2. Step 2: Convert to fraction form
    18,115.12/25,001.04 = 11,042.56/x
  3. Step 3: Cross multiply
    18,115.12x = 25,001.04 × 11,042.56
  4. Step 4: Simplify right side
    18,115.12x = 276,075,484.26
  5. Step 5: Solve for x
    x = 276,075,484.26/18,115.12
  6. Step 6: Final answer
    x = 15,240.06

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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.