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Finding the Fourth Proportional to 18,589.68, 27,881.64 and 5,440.68

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Solution

The fourth proportional to 18,589.68, 27,881.64 and 5,440.68 is: 8,160.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.68 : 27,881.64 = 5,440.68 : x
  2. Step 2: Convert to fraction form
    18,589.68/27,881.64 = 5,440.68/x
  3. Step 3: Cross multiply
    18,589.68x = 27,881.64 × 5,440.68
  4. Step 4: Simplify right side
    18,589.68x = 151,695,081.12
  5. Step 5: Solve for x
    x = 151,695,081.12/18,589.68
  6. Step 6: Final answer
    x = 8,160.18

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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.