Home / 15,422.31-21,282.75-8,348.85

Finding the Fourth Proportional to 15,422.31, 21,282.75 and 8,348.85

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Solution

The fourth proportional to 15,422.31, 21,282.75 and 8,348.85 is: 11,521.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.31 : 21,282.75 = 8,348.85 : x
  2. Step 2: Convert to fraction form
    15,422.31/21,282.75 = 8,348.85/x
  3. Step 3: Cross multiply
    15,422.31x = 21,282.75 × 8,348.85
  4. Step 4: Simplify right side
    15,422.31x = 177,686,487.34
  5. Step 5: Solve for x
    x = 177,686,487.34/15,422.31
  6. Step 6: Final answer
    x = 11,521.39

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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.