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Finding the Fourth Proportional to 28,497.90, 42,741.33 and 8,771.16

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Solution

The fourth proportional to 28,497.90, 42,741.33 and 8,771.16 is: 13,155.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,497.90 : 42,741.33 = 8,771.16 : x
  2. Step 2: Convert to fraction form
    28,497.90/42,741.33 = 8,771.16/x
  3. Step 3: Cross multiply
    28,497.90x = 42,741.33 × 8,771.16
  4. Step 4: Simplify right side
    28,497.90x = 374,891,044.04
  5. Step 5: Solve for x
    x = 374,891,044.04/28,497.90
  6. Step 6: Final answer
    x = 13,155.04

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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.