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Finding the Fourth Proportional to 16,955.92, 25,449.63 and 8,642.18

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Solution

The fourth proportional to 16,955.92, 25,449.63 and 8,642.18 is: 12,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,955.92 : 25,449.63 = 8,642.18 : x
  2. Step 2: Convert to fraction form
    16,955.92/25,449.63 = 8,642.18/x
  3. Step 3: Cross multiply
    16,955.92x = 25,449.63 × 8,642.18
  4. Step 4: Simplify right side
    16,955.92x = 219,940,283.39
  5. Step 5: Solve for x
    x = 219,940,283.39/16,955.92
  6. Step 6: Final answer
    x = 12,971.30

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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.