Home / 18,358.38-25,345.31-13,317.75

Finding the Fourth Proportional to 18,358.38, 25,345.31 and 13,317.75

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Solution

The fourth proportional to 18,358.38, 25,345.31 and 13,317.75 is: 18,386.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.38 : 25,345.31 = 13,317.75 : x
  2. Step 2: Convert to fraction form
    18,358.38/25,345.31 = 13,317.75/x
  3. Step 3: Cross multiply
    18,358.38x = 25,345.31 × 13,317.75
  4. Step 4: Simplify right side
    18,358.38x = 337,542,435.66
  5. Step 5: Solve for x
    x = 337,542,435.66/18,358.38
  6. Step 6: Final answer
    x = 18,386.29

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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.