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Finding the Fourth Proportional to 28,872.96, 39,841.92 and 22,919.04

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Solution

The fourth proportional to 28,872.96, 39,841.92 and 22,919.04 is: 31,626.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,872.96 : 39,841.92 = 22,919.04 : x
  2. Step 2: Convert to fraction form
    28,872.96/39,841.92 = 22,919.04/x
  3. Step 3: Cross multiply
    28,872.96x = 39,841.92 × 22,919.04
  4. Step 4: Simplify right side
    28,872.96x = 913,138,558.16
  5. Step 5: Solve for x
    x = 913,138,558.16/28,872.96
  6. Step 6: Final answer
    x = 31,626.08

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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.