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Finding the Fourth Proportional to 18,426.77, 27,640.16 and 4,575.77

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Solution

The fourth proportional to 18,426.77, 27,640.16 and 4,575.77 is: 6,863.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.77 : 27,640.16 = 4,575.77 : x
  2. Step 2: Convert to fraction form
    18,426.77/27,640.16 = 4,575.77/x
  3. Step 3: Cross multiply
    18,426.77x = 27,640.16 × 4,575.77
  4. Step 4: Simplify right side
    18,426.77x = 126,475,014.92
  5. Step 5: Solve for x
    x = 126,475,014.92/18,426.77
  6. Step 6: Final answer
    x = 6,863.66

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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.