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Finding the Fourth Proportional to 20,480.94, 30,740.67 and 10,627.20

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Solution

The fourth proportional to 20,480.94, 30,740.67 and 10,627.20 is: 15,950.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.94 : 30,740.67 = 10,627.20 : x
  2. Step 2: Convert to fraction form
    20,480.94/30,740.67 = 10,627.20/x
  3. Step 3: Cross multiply
    20,480.94x = 30,740.67 × 10,627.20
  4. Step 4: Simplify right side
    20,480.94x = 326,687,248.22
  5. Step 5: Solve for x
    x = 326,687,248.22/20,480.94
  6. Step 6: Final answer
    x = 15,950.79

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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.