Home / 20,318.46-30,471.49-7,167.76

Finding the Fourth Proportional to 20,318.46, 30,471.49 and 7,167.76

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Solution

The fourth proportional to 20,318.46, 30,471.49 and 7,167.76 is: 10,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.46 : 30,471.49 = 7,167.76 : x
  2. Step 2: Convert to fraction form
    20,318.46/30,471.49 = 7,167.76/x
  3. Step 3: Cross multiply
    20,318.46x = 30,471.49 × 7,167.76
  4. Step 4: Simplify right side
    20,318.46x = 218,412,259.94
  5. Step 5: Solve for x
    x = 218,412,259.94/20,318.46
  6. Step 6: Final answer
    x = 10,749.45

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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.