Home / 15,422.28-21,282.83-8,348.70

Finding the Fourth Proportional to 15,422.28, 21,282.83 and 8,348.70

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Solution

The fourth proportional to 15,422.28, 21,282.83 and 8,348.70 is: 11,521.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.28 : 21,282.83 = 8,348.70 : x
  2. Step 2: Convert to fraction form
    15,422.28/21,282.83 = 8,348.70/x
  3. Step 3: Cross multiply
    15,422.28x = 21,282.83 × 8,348.70
  4. Step 4: Simplify right side
    15,422.28x = 177,683,962.82
  5. Step 5: Solve for x
    x = 177,683,962.82/15,422.28
  6. Step 6: Final answer
    x = 11,521.25

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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.