Home / 18,354.38-25,339.80-13,313.76

Finding the Fourth Proportional to 18,354.38, 25,339.80 and 13,313.76

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Solution

The fourth proportional to 18,354.38, 25,339.80 and 13,313.76 is: 18,380.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354.38 : 25,339.80 = 13,313.76 : x
  2. Step 2: Convert to fraction form
    18,354.38/25,339.80 = 13,313.76/x
  3. Step 3: Cross multiply
    18,354.38x = 25,339.80 × 13,313.76
  4. Step 4: Simplify right side
    18,354.38x = 337,368,015.65
  5. Step 5: Solve for x
    x = 337,368,015.65/18,354.38
  6. Step 6: Final answer
    x = 18,380.79

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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.