Home / 15,322.75-21,145.68-8,517.41

Finding the Fourth Proportional to 15,322.75, 21,145.68 and 8,517.41

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Solution

The fourth proportional to 15,322.75, 21,145.68 and 8,517.41 is: 11,754.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.75 : 21,145.68 = 8,517.41 : x
  2. Step 2: Convert to fraction form
    15,322.75/21,145.68 = 8,517.41/x
  3. Step 3: Cross multiply
    15,322.75x = 21,145.68 × 8,517.41
  4. Step 4: Simplify right side
    15,322.75x = 180,106,277.97
  5. Step 5: Solve for x
    x = 180,106,277.97/15,322.75
  6. Step 6: Final answer
    x = 11,754.18

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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.