Home / 21,691.60-32,521.04-11,839.28

Finding the Fourth Proportional to 21,691.60, 32,521.04 and 11,839.28

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Solution

The fourth proportional to 21,691.60, 32,521.04 and 11,839.28 is: 17,749.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,691.60 : 32,521.04 = 11,839.28 : x
  2. Step 2: Convert to fraction form
    21,691.60/32,521.04 = 11,839.28/x
  3. Step 3: Cross multiply
    21,691.60x = 32,521.04 × 11,839.28
  4. Step 4: Simplify right side
    21,691.60x = 385,025,698.45
  5. Step 5: Solve for x
    x = 385,025,698.45/21,691.60
  6. Step 6: Final answer
    x = 17,749.99

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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.