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Finding the Fourth Proportional to 18,256.40, 27,387.42 and 7,726.48

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Solution

The fourth proportional to 18,256.40, 27,387.42 and 7,726.48 is: 11,590.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,256.40 : 27,387.42 = 7,726.48 : x
  2. Step 2: Convert to fraction form
    18,256.40/27,387.42 = 7,726.48/x
  3. Step 3: Cross multiply
    18,256.40x = 27,387.42 × 7,726.48
  4. Step 4: Simplify right side
    18,256.40x = 211,608,352.88
  5. Step 5: Solve for x
    x = 211,608,352.88/18,256.40
  6. Step 6: Final answer
    x = 11,590.91

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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.