Home / 8,987.13-13,460.17-7,936

Finding the Fourth Proportional to 8,987.13, 13,460.17 and 7,936

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Solution

The fourth proportional to 8,987.13, 13,460.17 and 7,936 is: 11,885.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.13 : 13,460.17 = 7,936 : x
  2. Step 2: Convert to fraction form
    8,987.13/13,460.17 = 7,936/x
  3. Step 3: Cross multiply
    8,987.13x = 13,460.17 × 7,936
  4. Step 4: Simplify right side
    8,987.13x = 106,819,909.12
  5. Step 5: Solve for x
    x = 106,819,909.12/8,987.13
  6. Step 6: Final answer
    x = 11,885.88

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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.