Home / 19,147.87-26,418.28-11,188.56

Finding the Fourth Proportional to 19,147.87, 26,418.28 and 11,188.56

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Solution

The fourth proportional to 19,147.87, 26,418.28 and 11,188.56 is: 15,436.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.87 : 26,418.28 = 11,188.56 : x
  2. Step 2: Convert to fraction form
    19,147.87/26,418.28 = 11,188.56/x
  3. Step 3: Cross multiply
    19,147.87x = 26,418.28 × 11,188.56
  4. Step 4: Simplify right side
    19,147.87x = 295,582,348.58
  5. Step 5: Solve for x
    x = 295,582,348.58/19,147.87
  6. Step 6: Final answer
    x = 15,436.83

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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.