Home / 15,422.49-21,283.05-8,348.91

Finding the Fourth Proportional to 15,422.49, 21,283.05 and 8,348.91

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Solution

The fourth proportional to 15,422.49, 21,283.05 and 8,348.91 is: 11,521.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.49 : 21,283.05 = 8,348.91 : x
  2. Step 2: Convert to fraction form
    15,422.49/21,283.05 = 8,348.91/x
  3. Step 3: Cross multiply
    15,422.49x = 21,283.05 × 8,348.91
  4. Step 4: Simplify right side
    15,422.49x = 177,690,268.98
  5. Step 5: Solve for x
    x = 177,690,268.98/15,422.49
  6. Step 6: Final answer
    x = 11,521.50

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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.