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Finding the Fourth Proportional to 28,353.88, 42,529.38 and 8,632

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Solution

The fourth proportional to 28,353.88, 42,529.38 and 8,632 is: 12,947.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,353.88 : 42,529.38 = 8,632 : x
  2. Step 2: Convert to fraction form
    28,353.88/42,529.38 = 8,632/x
  3. Step 3: Cross multiply
    28,353.88x = 42,529.38 × 8,632
  4. Step 4: Simplify right side
    28,353.88x = 367,113,608.16
  5. Step 5: Solve for x
    x = 367,113,608.16/28,353.88
  6. Step 6: Final answer
    x = 12,947.56

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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.