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Finding the Fourth Proportional to 13,371.84, 18,446.88 and 8,657.52

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Solution

The fourth proportional to 13,371.84, 18,446.88 and 8,657.52 is: 11,943.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.84 : 18,446.88 = 8,657.52 : x
  2. Step 2: Convert to fraction form
    13,371.84/18,446.88 = 8,657.52/x
  3. Step 3: Cross multiply
    13,371.84x = 18,446.88 × 8,657.52
  4. Step 4: Simplify right side
    13,371.84x = 159,704,232.54
  5. Step 5: Solve for x
    x = 159,704,232.54/13,371.84
  6. Step 6: Final answer
    x = 11,943.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.