Home / 11,987.84-17,981.01-3,667.20

Finding the Fourth Proportional to 11,987.84, 17,981.01 and 3,667.20

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Solution

The fourth proportional to 11,987.84, 17,981.01 and 3,667.20 is: 5,500.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.84 : 17,981.01 = 3,667.20 : x
  2. Step 2: Convert to fraction form
    11,987.84/17,981.01 = 3,667.20/x
  3. Step 3: Cross multiply
    11,987.84x = 17,981.01 × 3,667.20
  4. Step 4: Simplify right side
    11,987.84x = 65,939,953.33
  5. Step 5: Solve for x
    x = 65,939,953.33/11,987.84
  6. Step 6: Final answer
    x = 5,500.57

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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.