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Finding the Fourth Proportional to 18,426.57, 27,640.02 and 4,575.57

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Solution

The fourth proportional to 18,426.57, 27,640.02 and 4,575.57 is: 6,863.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.57 : 27,640.02 = 4,575.57 : x
  2. Step 2: Convert to fraction form
    18,426.57/27,640.02 = 4,575.57/x
  3. Step 3: Cross multiply
    18,426.57x = 27,640.02 × 4,575.57
  4. Step 4: Simplify right side
    18,426.57x = 126,468,846.31
  5. Step 5: Solve for x
    x = 126,468,846.31/18,426.57
  6. Step 6: Final answer
    x = 6,863.40

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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.