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Finding the Fourth Proportional to 19,236.32, 28,854.32 and 10,920.16

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Solution

The fourth proportional to 19,236.32, 28,854.32 and 10,920.16 is: 16,380.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,236.32 : 28,854.32 = 10,920.16 : x
  2. Step 2: Convert to fraction form
    19,236.32/28,854.32 = 10,920.16/x
  3. Step 3: Cross multiply
    19,236.32x = 28,854.32 × 10,920.16
  4. Step 4: Simplify right side
    19,236.32x = 315,093,791.09
  5. Step 5: Solve for x
    x = 315,093,791.09/19,236.32
  6. Step 6: Final answer
    x = 16,380.15

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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.