Home / 10,979.40-15,151.68-6,265.20

Finding the Fourth Proportional to 10,979.40, 15,151.68 and 6,265.20

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Solution

The fourth proportional to 10,979.40, 15,151.68 and 6,265.20 is: 8,646.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.40 : 15,151.68 = 6,265.20 : x
  2. Step 2: Convert to fraction form
    10,979.40/15,151.68 = 6,265.20/x
  3. Step 3: Cross multiply
    10,979.40x = 15,151.68 × 6,265.20
  4. Step 4: Simplify right side
    10,979.40x = 94,928,305.54
  5. Step 5: Solve for x
    x = 94,928,305.54/10,979.40
  6. Step 6: Final answer
    x = 8,646.04

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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.