Home / 21,715.30-32,560.80-9,233.20

Finding the Fourth Proportional to 21,715.30, 32,560.80 and 9,233.20

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Solution

The fourth proportional to 21,715.30, 32,560.80 and 9,233.20 is: 13,844.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.30 : 32,560.80 = 9,233.20 : x
  2. Step 2: Convert to fraction form
    21,715.30/32,560.80 = 9,233.20/x
  3. Step 3: Cross multiply
    21,715.30x = 32,560.80 × 9,233.20
  4. Step 4: Simplify right side
    21,715.30x = 300,640,378.56
  5. Step 5: Solve for x
    x = 300,640,378.56/21,715.30
  6. Step 6: Final answer
    x = 13,844.63

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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.