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Finding the Fourth Proportional to 18,667.62, 28,011.15 and 17,591.94

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Solution

The fourth proportional to 18,667.62, 28,011.15 and 17,591.94 is: 26,397.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.62 : 28,011.15 = 17,591.94 : x
  2. Step 2: Convert to fraction form
    18,667.62/28,011.15 = 17,591.94/x
  3. Step 3: Cross multiply
    18,667.62x = 28,011.15 × 17,591.94
  4. Step 4: Simplify right side
    18,667.62x = 492,770,470.13
  5. Step 5: Solve for x
    x = 492,770,470.13/18,667.62
  6. Step 6: Final answer
    x = 26,397.07

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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.