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Finding the Fourth Proportional to 18,101.21, 27,156.06 and 5,620.59

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Solution

The fourth proportional to 18,101.21, 27,156.06 and 5,620.59 is: 8,432.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,101.21 : 27,156.06 = 5,620.59 : x
  2. Step 2: Convert to fraction form
    18,101.21/27,156.06 = 5,620.59/x
  3. Step 3: Cross multiply
    18,101.21x = 27,156.06 × 5,620.59
  4. Step 4: Simplify right side
    18,101.21x = 152,633,079.28
  5. Step 5: Solve for x
    x = 152,633,079.28/18,101.21
  6. Step 6: Final answer
    x = 8,432.21

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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.