Home / 11,978.74-16,531.14-6,942.88

Finding the Fourth Proportional to 11,978.74, 16,531.14 and 6,942.88

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Solution

The fourth proportional to 11,978.74, 16,531.14 and 6,942.88 is: 9,581.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,978.74 : 16,531.14 = 6,942.88 : x
  2. Step 2: Convert to fraction form
    11,978.74/16,531.14 = 6,942.88/x
  3. Step 3: Cross multiply
    11,978.74x = 16,531.14 × 6,942.88
  4. Step 4: Simplify right side
    11,978.74x = 114,773,721.28
  5. Step 5: Solve for x
    x = 114,773,721.28/11,978.74
  6. Step 6: Final answer
    x = 9,581.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.