Home / 10,320.92-15,471.81-4,778.70

Finding the Fourth Proportional to 10,320.92, 15,471.81 and 4,778.70

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Solution

The fourth proportional to 10,320.92, 15,471.81 and 4,778.70 is: 7,163.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,320.92 : 15,471.81 = 4,778.70 : x
  2. Step 2: Convert to fraction form
    10,320.92/15,471.81 = 4,778.70/x
  3. Step 3: Cross multiply
    10,320.92x = 15,471.81 × 4,778.70
  4. Step 4: Simplify right side
    10,320.92x = 73,935,080.43
  5. Step 5: Solve for x
    x = 73,935,080.43/10,320.92
  6. Step 6: Final answer
    x = 7,163.61

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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.