Home / 15,039.20-20,754.39-8,324.64

Finding the Fourth Proportional to 15,039.20, 20,754.39 and 8,324.64

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Solution

The fourth proportional to 15,039.20, 20,754.39 and 8,324.64 is: 11,488.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,039.20 : 20,754.39 = 8,324.64 : x
  2. Step 2: Convert to fraction form
    15,039.20/20,754.39 = 8,324.64/x
  3. Step 3: Cross multiply
    15,039.20x = 20,754.39 × 8,324.64
  4. Step 4: Simplify right side
    15,039.20x = 172,772,856.39
  5. Step 5: Solve for x
    x = 172,772,856.39/15,039.20
  6. Step 6: Final answer
    x = 11,488.17

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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.