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Finding the Fourth Proportional to 20,615.68, 30,923.52 and 10,234.72

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Solution

The fourth proportional to 20,615.68, 30,923.52 and 10,234.72 is: 15,352.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.68 : 30,923.52 = 10,234.72 : x
  2. Step 2: Convert to fraction form
    20,615.68/30,923.52 = 10,234.72/x
  3. Step 3: Cross multiply
    20,615.68x = 30,923.52 × 10,234.72
  4. Step 4: Simplify right side
    20,615.68x = 316,493,568.61
  5. Step 5: Solve for x
    x = 316,493,568.61/20,615.68
  6. Step 6: Final answer
    x = 15,352.08

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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.