Home / 18,317.12-25,279.48-11,147.56

Finding the Fourth Proportional to 18,317.12, 25,279.48 and 11,147.56

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Solution

The fourth proportional to 18,317.12, 25,279.48 and 11,147.56 is: 15,384.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,317.12 : 25,279.48 = 11,147.56 : x
  2. Step 2: Convert to fraction form
    18,317.12/25,279.48 = 11,147.56/x
  3. Step 3: Cross multiply
    18,317.12x = 25,279.48 × 11,147.56
  4. Step 4: Simplify right side
    18,317.12x = 281,804,520.07
  5. Step 5: Solve for x
    x = 281,804,520.07/18,317.12
  6. Step 6: Final answer
    x = 15,384.76

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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.