Home / 13,772.88-20,650.68-9,087.92

Finding the Fourth Proportional to 13,772.88, 20,650.68 and 9,087.92

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Solution

The fourth proportional to 13,772.88, 20,650.68 and 9,087.92 is: 13,626.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.88 : 20,650.68 = 9,087.92 : x
  2. Step 2: Convert to fraction form
    13,772.88/20,650.68 = 9,087.92/x
  3. Step 3: Cross multiply
    13,772.88x = 20,650.68 × 9,087.92
  4. Step 4: Simplify right side
    13,772.88x = 187,671,727.79
  5. Step 5: Solve for x
    x = 187,671,727.79/13,772.88
  6. Step 6: Final answer
    x = 13,626.18

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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.