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Finding the Fourth Proportional to 28,294.35, 42,445.92 and 8,568.21

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Solution

The fourth proportional to 28,294.35, 42,445.92 and 8,568.21 is: 12,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,294.35 : 42,445.92 = 8,568.21 : x
  2. Step 2: Convert to fraction form
    28,294.35/42,445.92 = 8,568.21/x
  3. Step 3: Cross multiply
    28,294.35x = 42,445.92 × 8,568.21
  4. Step 4: Simplify right side
    28,294.35x = 363,685,747.51
  5. Step 5: Solve for x
    x = 363,685,747.51/28,294.35
  6. Step 6: Final answer
    x = 12,853.65

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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.