Home / 20,176.56-30,245.40-10,320.48

Finding the Fourth Proportional to 20,176.56, 30,245.40 and 10,320.48

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Solution

The fourth proportional to 20,176.56, 30,245.40 and 10,320.48 is: 15,470.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,176.56 : 30,245.40 = 10,320.48 : x
  2. Step 2: Convert to fraction form
    20,176.56/30,245.40 = 10,320.48/x
  3. Step 3: Cross multiply
    20,176.56x = 30,245.40 × 10,320.48
  4. Step 4: Simplify right side
    20,176.56x = 312,147,045.79
  5. Step 5: Solve for x
    x = 312,147,045.79/20,176.56
  6. Step 6: Final answer
    x = 15,470.78

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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.