Home / 15,422.80-21,283.41-8,349.22

Finding the Fourth Proportional to 15,422.80, 21,283.41 and 8,349.22

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Solution

The fourth proportional to 15,422.80, 21,283.41 and 8,349.22 is: 11,521.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.80 : 21,283.41 = 8,349.22 : x
  2. Step 2: Convert to fraction form
    15,422.80/21,283.41 = 8,349.22/x
  3. Step 3: Cross multiply
    15,422.80x = 21,283.41 × 8,349.22
  4. Step 4: Simplify right side
    15,422.80x = 177,699,872.44
  5. Step 5: Solve for x
    x = 177,699,872.44/15,422.80
  6. Step 6: Final answer
    x = 11,521.89

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1.5x scale

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.