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Finding the Fourth Proportional to 28,610.46, 42,922.32 and 8,887.95

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Solution

The fourth proportional to 28,610.46, 42,922.32 and 8,887.95 is: 13,333.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,610.46 : 42,922.32 = 8,887.95 : x
  2. Step 2: Convert to fraction form
    28,610.46/42,922.32 = 8,887.95/x
  3. Step 3: Cross multiply
    28,610.46x = 42,922.32 × 8,887.95
  4. Step 4: Simplify right side
    28,610.46x = 381,491,434.04
  5. Step 5: Solve for x
    x = 381,491,434.04/28,610.46
  6. Step 6: Final answer
    x = 13,333.98

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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.