Home / 10,979.12-15,151.13-5,943.35

Finding the Fourth Proportional to 10,979.12, 15,151.13 and 5,943.35

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Solution

The fourth proportional to 10,979.12, 15,151.13 and 5,943.35 is: 8,201.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.12 : 15,151.13 = 5,943.35 : x
  2. Step 2: Convert to fraction form
    10,979.12/15,151.13 = 5,943.35/x
  3. Step 3: Cross multiply
    10,979.12x = 15,151.13 × 5,943.35
  4. Step 4: Simplify right side
    10,979.12x = 90,048,468.49
  5. Step 5: Solve for x
    x = 90,048,468.49/10,979.12
  6. Step 6: Final answer
    x = 8,201.79

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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.