Home / 10,380.10-15,570.15-9,310.90

Finding the Fourth Proportional to 10,380.10, 15,570.15 and 9,310.90

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Solution

The fourth proportional to 10,380.10, 15,570.15 and 9,310.90 is: 13,966.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.10 : 15,570.15 = 9,310.90 : x
  2. Step 2: Convert to fraction form
    10,380.10/15,570.15 = 9,310.90/x
  3. Step 3: Cross multiply
    10,380.10x = 15,570.15 × 9,310.90
  4. Step 4: Simplify right side
    10,380.10x = 144,972,109.64
  5. Step 5: Solve for x
    x = 144,972,109.64/10,380.10
  6. Step 6: Final answer
    x = 13,966.35

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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.