Home / 11,987.73-17,981.73-6,721.92

Finding the Fourth Proportional to 11,987.73, 17,981.73 and 6,721.92

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Solution

The fourth proportional to 11,987.73, 17,981.73 and 6,721.92 is: 10,082.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.73 : 17,981.73 = 6,721.92 : x
  2. Step 2: Convert to fraction form
    11,987.73/17,981.73 = 6,721.92/x
  3. Step 3: Cross multiply
    11,987.73x = 17,981.73 × 6,721.92
  4. Step 4: Simplify right side
    11,987.73x = 120,871,750.52
  5. Step 5: Solve for x
    x = 120,871,750.52/11,987.73
  6. Step 6: Final answer
    x = 10,082.96

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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.