Home / 21,084.22-31,613.19-8,589.16

Finding the Fourth Proportional to 21,084.22, 31,613.19 and 8,589.16

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Solution

The fourth proportional to 21,084.22, 31,613.19 and 8,589.16 is: 12,878.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.22 : 31,613.19 = 8,589.16 : x
  2. Step 2: Convert to fraction form
    21,084.22/31,613.19 = 8,589.16/x
  3. Step 3: Cross multiply
    21,084.22x = 31,613.19 × 8,589.16
  4. Step 4: Simplify right side
    21,084.22x = 271,530,747.02
  5. Step 5: Solve for x
    x = 271,530,747.02/21,084.22
  6. Step 6: Final answer
    x = 12,878.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.