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Finding the Fourth Proportional to 18,013.80, 27,028.80 and 6,335.40

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Solution

The fourth proportional to 18,013.80, 27,028.80 and 6,335.40 is: 9,505.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,013.80 : 27,028.80 = 6,335.40 : x
  2. Step 2: Convert to fraction form
    18,013.80/27,028.80 = 6,335.40/x
  3. Step 3: Cross multiply
    18,013.80x = 27,028.80 × 6,335.40
  4. Step 4: Simplify right side
    18,013.80x = 171,238,259.52
  5. Step 5: Solve for x
    x = 171,238,259.52/18,013.80
  6. Step 6: Final answer
    x = 9,505.95

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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.