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Finding the Fourth Proportional to 18,667.98, 28,002.03 and 5,340.95

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Solution

The fourth proportional to 18,667.98, 28,002.03 and 5,340.95 is: 8,011.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.98 : 28,002.03 = 5,340.95 : x
  2. Step 2: Convert to fraction form
    18,667.98/28,002.03 = 5,340.95/x
  3. Step 3: Cross multiply
    18,667.98x = 28,002.03 × 5,340.95
  4. Step 4: Simplify right side
    18,667.98x = 149,557,441.50
  5. Step 5: Solve for x
    x = 149,557,441.50/18,667.98
  6. Step 6: Final answer
    x = 8,011.44

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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.