Home / 21,282.75-29,356.88-15,304.95

Finding the Fourth Proportional to 21,282.75, 29,356.88 and 15,304.95

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Solution

The fourth proportional to 21,282.75, 29,356.88 and 15,304.95 is: 21,111.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.75 : 29,356.88 = 15,304.95 : x
  2. Step 2: Convert to fraction form
    21,282.75/29,356.88 = 15,304.95/x
  3. Step 3: Cross multiply
    21,282.75x = 29,356.88 × 15,304.95
  4. Step 4: Simplify right side
    21,282.75x = 449,305,580.56
  5. Step 5: Solve for x
    x = 449,305,580.56/21,282.75
  6. Step 6: Final answer
    x = 21,111.26

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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.