Home / 11,987.28-17,981.73-5,748.66

Finding the Fourth Proportional to 11,987.28, 17,981.73 and 5,748.66

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Solution

The fourth proportional to 11,987.28, 17,981.73 and 5,748.66 is: 8,623.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.28 : 17,981.73 = 5,748.66 : x
  2. Step 2: Convert to fraction form
    11,987.28/17,981.73 = 5,748.66/x
  3. Step 3: Cross multiply
    11,987.28x = 17,981.73 × 5,748.66
  4. Step 4: Simplify right side
    11,987.28x = 103,370,851.98
  5. Step 5: Solve for x
    x = 103,370,851.98/11,987.28
  6. Step 6: Final answer
    x = 8,623.38

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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.