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Finding the Fourth Proportional to 28,490.33, 42,741.17 and 8,768.14

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Solution

The fourth proportional to 28,490.33, 42,741.17 and 8,768.14 is: 13,153.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.33 : 42,741.17 = 8,768.14 : x
  2. Step 2: Convert to fraction form
    28,490.33/42,741.17 = 8,768.14/x
  3. Step 3: Cross multiply
    28,490.33x = 42,741.17 × 8,768.14
  4. Step 4: Simplify right side
    28,490.33x = 374,760,562.32
  5. Step 5: Solve for x
    x = 374,760,562.32/28,490.33
  6. Step 6: Final answer
    x = 13,153.96

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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.