Home / 12,721.38-19,069.03-5,330.13

Finding the Fourth Proportional to 12,721.38, 19,069.03 and 5,330.13

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Solution

The fourth proportional to 12,721.38, 19,069.03 and 5,330.13 is: 7,989.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.38 : 19,069.03 = 5,330.13 : x
  2. Step 2: Convert to fraction form
    12,721.38/19,069.03 = 5,330.13/x
  3. Step 3: Cross multiply
    12,721.38x = 19,069.03 × 5,330.13
  4. Step 4: Simplify right side
    12,721.38x = 101,640,408.87
  5. Step 5: Solve for x
    x = 101,640,408.87/12,721.38
  6. Step 6: Final answer
    x = 7,989.73

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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.