Home / 15,531.62-21,433.68-8,458.02

Finding the Fourth Proportional to 15,531.62, 21,433.68 and 8,458.02

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Solution

The fourth proportional to 15,531.62, 21,433.68 and 8,458.02 is: 11,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.62 : 21,433.68 = 8,458.02 : x
  2. Step 2: Convert to fraction form
    15,531.62/21,433.68 = 8,458.02/x
  3. Step 3: Cross multiply
    15,531.62x = 21,433.68 × 8,458.02
  4. Step 4: Simplify right side
    15,531.62x = 181,286,494.11
  5. Step 5: Solve for x
    x = 181,286,494.11/15,531.62
  6. Step 6: Final answer
    x = 11,672.10

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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.