Home / 13,584.20-20,376.30-11,761.70

Finding the Fourth Proportional to 13,584.20, 20,376.30 and 11,761.70

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Solution

The fourth proportional to 13,584.20, 20,376.30 and 11,761.70 is: 17,642.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,584.20 : 20,376.30 = 11,761.70 : x
  2. Step 2: Convert to fraction form
    13,584.20/20,376.30 = 11,761.70/x
  3. Step 3: Cross multiply
    13,584.20x = 20,376.30 × 11,761.70
  4. Step 4: Simplify right side
    13,584.20x = 239,659,927.71
  5. Step 5: Solve for x
    x = 239,659,927.71/13,584.20
  6. Step 6: Final answer
    x = 17,642.55

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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.