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Finding the Fourth Proportional to 28,321.24, 42,479.11 and 8,599.97

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Solution

The fourth proportional to 28,321.24, 42,479.11 and 8,599.97 is: 12,899.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.24 : 42,479.11 = 8,599.97 : x
  2. Step 2: Convert to fraction form
    28,321.24/42,479.11 = 8,599.97/x
  3. Step 3: Cross multiply
    28,321.24x = 42,479.11 × 8,599.97
  4. Step 4: Simplify right side
    28,321.24x = 365,319,071.63
  5. Step 5: Solve for x
    x = 365,319,071.63/28,321.24
  6. Step 6: Final answer
    x = 12,899.12

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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.