Home / 18,708.56-25,782.17-13,394.15

Finding the Fourth Proportional to 18,708.56, 25,782.17 and 13,394.15

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Solution

The fourth proportional to 18,708.56, 25,782.17 and 13,394.15 is: 18,458.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.56 : 25,782.17 = 13,394.15 : x
  2. Step 2: Convert to fraction form
    18,708.56/25,782.17 = 13,394.15/x
  3. Step 3: Cross multiply
    18,708.56x = 25,782.17 × 13,394.15
  4. Step 4: Simplify right side
    18,708.56x = 345,330,252.31
  5. Step 5: Solve for x
    x = 345,330,252.31/18,708.56
  6. Step 6: Final answer
    x = 18,458.41

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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.