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Finding the Fourth Proportional to 18,440.76, 27,661.40 and 4,589.76

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Solution

The fourth proportional to 18,440.76, 27,661.40 and 4,589.76 is: 6,884.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,440.76 : 27,661.40 = 4,589.76 : x
  2. Step 2: Convert to fraction form
    18,440.76/27,661.40 = 4,589.76/x
  3. Step 3: Cross multiply
    18,440.76x = 27,661.40 × 4,589.76
  4. Step 4: Simplify right side
    18,440.76x = 126,959,187.26
  5. Step 5: Solve for x
    x = 126,959,187.26/18,440.76
  6. Step 6: Final answer
    x = 6,884.70

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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.