Home / 15,912.40-21,959.60-8,839.32

Finding the Fourth Proportional to 15,912.40, 21,959.60 and 8,839.32

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Solution

The fourth proportional to 15,912.40, 21,959.60 and 8,839.32 is: 12,198.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.40 : 21,959.60 = 8,839.32 : x
  2. Step 2: Convert to fraction form
    15,912.40/21,959.60 = 8,839.32/x
  3. Step 3: Cross multiply
    15,912.40x = 21,959.60 × 8,839.32
  4. Step 4: Simplify right side
    15,912.40x = 194,107,931.47
  5. Step 5: Solve for x
    x = 194,107,931.47/15,912.40
  6. Step 6: Final answer
    x = 12,198.53

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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.