Home / 18,427.16-25,426.20-15,906.65

Finding the Fourth Proportional to 18,427.16, 25,426.20 and 15,906.65

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Solution

The fourth proportional to 18,427.16, 25,426.20 and 15,906.65 is: 21,948.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.16 : 25,426.20 = 15,906.65 : x
  2. Step 2: Convert to fraction form
    18,427.16/25,426.20 = 15,906.65/x
  3. Step 3: Cross multiply
    18,427.16x = 25,426.20 × 15,906.65
  4. Step 4: Simplify right side
    18,427.16x = 404,445,596.75
  5. Step 5: Solve for x
    x = 404,445,596.75/18,427.16
  6. Step 6: Final answer
    x = 21,948.34

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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.