Home / 11,932.40-17,878.28-7,766.08

Finding the Fourth Proportional to 11,932.40, 17,878.28 and 7,766.08

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Solution

The fourth proportional to 11,932.40, 17,878.28 and 7,766.08 is: 11,635.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,932.40 : 17,878.28 = 7,766.08 : x
  2. Step 2: Convert to fraction form
    11,932.40/17,878.28 = 7,766.08/x
  3. Step 3: Cross multiply
    11,932.40x = 17,878.28 × 7,766.08
  4. Step 4: Simplify right side
    11,932.40x = 138,844,152.74
  5. Step 5: Solve for x
    x = 138,844,152.74/11,932.40
  6. Step 6: Final answer
    x = 11,635.89

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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.