Home / 13,660.04-18,850.86-7,691.76

Finding the Fourth Proportional to 13,660.04, 18,850.86 and 7,691.76

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Solution

The fourth proportional to 13,660.04, 18,850.86 and 7,691.76 is: 10,614.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.04 : 18,850.86 = 7,691.76 : x
  2. Step 2: Convert to fraction form
    13,660.04/18,850.86 = 7,691.76/x
  3. Step 3: Cross multiply
    13,660.04x = 18,850.86 × 7,691.76
  4. Step 4: Simplify right side
    13,660.04x = 144,996,290.91
  5. Step 5: Solve for x
    x = 144,996,290.91/13,660.04
  6. Step 6: Final answer
    x = 10,614.63

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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.