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Finding the Fourth Proportional to 18,291.93, 27,437.92 and 5,144.31

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Solution

The fourth proportional to 18,291.93, 27,437.92 and 5,144.31 is: 7,716.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.93 : 27,437.92 = 5,144.31 : x
  2. Step 2: Convert to fraction form
    18,291.93/27,437.92 = 5,144.31/x
  3. Step 3: Cross multiply
    18,291.93x = 27,437.92 × 5,144.31
  4. Step 4: Simplify right side
    18,291.93x = 141,149,153.37
  5. Step 5: Solve for x
    x = 141,149,153.37/18,291.93
  6. Step 6: Final answer
    x = 7,716.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.