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Finding the Fourth Proportional to 28,191.60, 42,165.90 and 25,251.30

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Solution

The fourth proportional to 28,191.60, 42,165.90 and 25,251.30 is: 37,768.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.60 : 42,165.90 = 25,251.30 : x
  2. Step 2: Convert to fraction form
    28,191.60/42,165.90 = 25,251.30/x
  3. Step 3: Cross multiply
    28,191.60x = 42,165.90 × 25,251.30
  4. Step 4: Simplify right side
    28,191.60x = 1,064,743,790.67
  5. Step 5: Solve for x
    x = 1,064,743,790.67/28,191.60
  6. Step 6: Final answer
    x = 37,768.12

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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.