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Finding the Fourth Proportional to 28,361.75, 42,537.96 and 10,587.75

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Solution

The fourth proportional to 28,361.75, 42,537.96 and 10,587.75 is: 15,879.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,361.75 : 42,537.96 = 10,587.75 : x
  2. Step 2: Convert to fraction form
    28,361.75/42,537.96 = 10,587.75/x
  3. Step 3: Cross multiply
    28,361.75x = 42,537.96 × 10,587.75
  4. Step 4: Simplify right side
    28,361.75x = 450,381,020.36
  5. Step 5: Solve for x
    x = 450,381,020.36/28,361.75
  6. Step 6: Final answer
    x = 15,879.87

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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.