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Finding the Fourth Proportional to 18,278.25, 27,417.53 and 4,427.25

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Solution

The fourth proportional to 18,278.25, 27,417.53 and 4,427.25 is: 6,640.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.25 : 27,417.53 = 4,427.25 : x
  2. Step 2: Convert to fraction form
    18,278.25/27,417.53 = 4,427.25/x
  3. Step 3: Cross multiply
    18,278.25x = 27,417.53 × 4,427.25
  4. Step 4: Simplify right side
    18,278.25x = 121,384,237.56
  5. Step 5: Solve for x
    x = 121,384,237.56/18,278.25
  6. Step 6: Final answer
    x = 6,640.91

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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.