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Finding the Fourth Proportional to 15,028.38, 20,739.78 and 9,366.48

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Solution

The fourth proportional to 15,028.38, 20,739.78 and 9,366.48 is: 12,926.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,028.38 : 20,739.78 = 9,366.48 : x
  2. Step 2: Convert to fraction form
    15,028.38/20,739.78 = 9,366.48/x
  3. Step 3: Cross multiply
    15,028.38x = 20,739.78 × 9,366.48
  4. Step 4: Simplify right side
    15,028.38x = 194,258,734.57
  5. Step 5: Solve for x
    x = 194,258,734.57/15,028.38
  6. Step 6: Final answer
    x = 12,926.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.