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Finding the Fourth Proportional to 17,070.87, 25,587.80 and 8,739.46

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Solution

The fourth proportional to 17,070.87, 25,587.80 and 8,739.46 is: 13,099.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,070.87 : 25,587.80 = 8,739.46 : x
  2. Step 2: Convert to fraction form
    17,070.87/25,587.80 = 8,739.46/x
  3. Step 3: Cross multiply
    17,070.87x = 25,587.80 × 8,739.46
  4. Step 4: Simplify right side
    17,070.87x = 223,623,382.95
  5. Step 5: Solve for x
    x = 223,623,382.95/17,070.87
  6. Step 6: Final answer
    x = 13,099.71

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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.