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Finding the Fourth Proportional to 19,617.42, 27,065.88 and 11,118.87

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Solution

The fourth proportional to 19,617.42, 27,065.88 and 11,118.87 is: 15,340.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,617.42 : 27,065.88 = 11,118.87 : x
  2. Step 2: Convert to fraction form
    19,617.42/27,065.88 = 11,118.87/x
  3. Step 3: Cross multiply
    19,617.42x = 27,065.88 × 11,118.87
  4. Step 4: Simplify right side
    19,617.42x = 300,942,001.16
  5. Step 5: Solve for x
    x = 300,942,001.16/19,617.42
  6. Step 6: Final answer
    x = 15,340.55

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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.