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Finding the Fourth Proportional to 28,353.84, 42,535.44 and 8,627.88

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Solution

The fourth proportional to 28,353.84, 42,535.44 and 8,627.88 is: 12,943.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,353.84 : 42,535.44 = 8,627.88 : x
  2. Step 2: Convert to fraction form
    28,353.84/42,535.44 = 8,627.88/x
  3. Step 3: Cross multiply
    28,353.84x = 42,535.44 × 8,627.88
  4. Step 4: Simplify right side
    28,353.84x = 366,990,672.07
  5. Step 5: Solve for x
    x = 366,990,672.07/28,353.84
  6. Step 6: Final answer
    x = 12,943.24

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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.