Home / 13,768.80-18,957.78-12,152.04

Finding the Fourth Proportional to 13,768.80, 18,957.78 and 12,152.04

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Solution

The fourth proportional to 13,768.80, 18,957.78 and 12,152.04 is: 16,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.80 : 18,957.78 = 12,152.04 : x
  2. Step 2: Convert to fraction form
    13,768.80/18,957.78 = 12,152.04/x
  3. Step 3: Cross multiply
    13,768.80x = 18,957.78 × 12,152.04
  4. Step 4: Simplify right side
    13,768.80x = 230,375,700.87
  5. Step 5: Solve for x
    x = 230,375,700.87/13,768.80
  6. Step 6: Final answer
    x = 16,731.72

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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.