Home / 15,306.42-21,122-8,591.44

Finding the Fourth Proportional to 15,306.42, 21,122 and 8,591.44

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Solution

The fourth proportional to 15,306.42, 21,122 and 8,591.44 is: 11,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.42 : 21,122 = 8,591.44 : x
  2. Step 2: Convert to fraction form
    15,306.42/21,122 = 8,591.44/x
  3. Step 3: Cross multiply
    15,306.42x = 21,122 × 8,591.44
  4. Step 4: Simplify right side
    15,306.42x = 181,468,395.68
  5. Step 5: Solve for x
    x = 181,468,395.68/15,306.42
  6. Step 6: Final answer
    x = 11,855.70

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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.