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Finding the Fourth Proportional to 18,437.95, 27,659.22 and 5,290.57

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Solution

The fourth proportional to 18,437.95, 27,659.22 and 5,290.57 is: 7,936.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,437.95 : 27,659.22 = 5,290.57 : x
  2. Step 2: Convert to fraction form
    18,437.95/27,659.22 = 5,290.57/x
  3. Step 3: Cross multiply
    18,437.95x = 27,659.22 × 5,290.57
  4. Step 4: Simplify right side
    18,437.95x = 146,333,039.56
  5. Step 5: Solve for x
    x = 146,333,039.56/18,437.95
  6. Step 6: Final answer
    x = 7,936.51

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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.