Home / 10,891.38-15,026.12-6,641.02

Finding the Fourth Proportional to 10,891.38, 15,026.12 and 6,641.02

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Solution

The fourth proportional to 10,891.38, 15,026.12 and 6,641.02 is: 9,162.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.38 : 15,026.12 = 6,641.02 : x
  2. Step 2: Convert to fraction form
    10,891.38/15,026.12 = 6,641.02/x
  3. Step 3: Cross multiply
    10,891.38x = 15,026.12 × 6,641.02
  4. Step 4: Simplify right side
    10,891.38x = 99,788,763.44
  5. Step 5: Solve for x
    x = 99,788,763.44/10,891.38
  6. Step 6: Final answer
    x = 9,162.18

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1.5x scale

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.