Home / 10,209.40-15,314.10-8,569.18

Finding the Fourth Proportional to 10,209.40, 15,314.10 and 8,569.18

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Solution

The fourth proportional to 10,209.40, 15,314.10 and 8,569.18 is: 12,853.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,209.40 : 15,314.10 = 8,569.18 : x
  2. Step 2: Convert to fraction form
    10,209.40/15,314.10 = 8,569.18/x
  3. Step 3: Cross multiply
    10,209.40x = 15,314.10 × 8,569.18
  4. Step 4: Simplify right side
    10,209.40x = 131,229,279.44
  5. Step 5: Solve for x
    x = 131,229,279.44/10,209.40
  6. Step 6: Final answer
    x = 12,853.77

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Similar ratio
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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.