Home / 15,172.88-22,716.12-13,686.80

Finding the Fourth Proportional to 15,172.88, 22,716.12 and 13,686.80

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Solution

The fourth proportional to 15,172.88, 22,716.12 and 13,686.80 is: 20,491.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.88 : 22,716.12 = 13,686.80 : x
  2. Step 2: Convert to fraction form
    15,172.88/22,716.12 = 13,686.80/x
  3. Step 3: Cross multiply
    15,172.88x = 22,716.12 × 13,686.80
  4. Step 4: Simplify right side
    15,172.88x = 310,910,991.22
  5. Step 5: Solve for x
    x = 310,910,991.22/15,172.88
  6. Step 6: Final answer
    x = 20,491.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.