Home / 13,380.85-18,474.61-11,959.98

Finding the Fourth Proportional to 13,380.85, 18,474.61 and 11,959.98

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Solution

The fourth proportional to 13,380.85, 18,474.61 and 11,959.98 is: 16,512.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.85 : 18,474.61 = 11,959.98 : x
  2. Step 2: Convert to fraction form
    13,380.85/18,474.61 = 11,959.98/x
  3. Step 3: Cross multiply
    13,380.85x = 18,474.61 × 11,959.98
  4. Step 4: Simplify right side
    13,380.85x = 220,955,966.11
  5. Step 5: Solve for x
    x = 220,955,966.11/13,380.85
  6. Step 6: Final answer
    x = 16,512.85

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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.