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Finding the Fourth Proportional to 28,449.13, 42,673.69 and 7,672.63

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Solution

The fourth proportional to 28,449.13, 42,673.69 and 7,672.63 is: 11,508.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449.13 : 42,673.69 = 7,672.63 : x
  2. Step 2: Convert to fraction form
    28,449.13/42,673.69 = 7,672.63/x
  3. Step 3: Cross multiply
    28,449.13x = 42,673.69 × 7,672.63
  4. Step 4: Simplify right side
    28,449.13x = 327,419,220.74
  5. Step 5: Solve for x
    x = 327,419,220.74/28,449.13
  6. Step 6: Final answer
    x = 11,508.94

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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.