Home / 28,172.22-38,876.46-15,425.17

Finding the Fourth Proportional to 28,172.22, 38,876.46 and 15,425.17

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Solution

The fourth proportional to 28,172.22, 38,876.46 and 15,425.17 is: 21,286.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172.22 : 38,876.46 = 15,425.17 : x
  2. Step 2: Convert to fraction form
    28,172.22/38,876.46 = 15,425.17/x
  3. Step 3: Cross multiply
    28,172.22x = 38,876.46 × 15,425.17
  4. Step 4: Simplify right side
    28,172.22x = 599,675,849.46
  5. Step 5: Solve for x
    x = 599,675,849.46/28,172.22
  6. Step 6: Final answer
    x = 21,286.07

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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.