Home / 13,217.11-18,239.79-7,248.38

Finding the Fourth Proportional to 13,217.11, 18,239.79 and 7,248.38

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Solution

The fourth proportional to 13,217.11, 18,239.79 and 7,248.38 is: 10,002.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.11 : 18,239.79 = 7,248.38 : x
  2. Step 2: Convert to fraction form
    13,217.11/18,239.79 = 7,248.38/x
  3. Step 3: Cross multiply
    13,217.11x = 18,239.79 × 7,248.38
  4. Step 4: Simplify right side
    13,217.11x = 132,208,974.64
  5. Step 5: Solve for x
    x = 132,208,974.64/13,217.11
  6. Step 6: Final answer
    x = 10,002.87

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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.