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Finding the Fourth Proportional to 18,901.62, 28,352.79 and 5,050.50

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Solution

The fourth proportional to 18,901.62, 28,352.79 and 5,050.50 is: 7,575.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.62 : 28,352.79 = 5,050.50 : x
  2. Step 2: Convert to fraction form
    18,901.62/28,352.79 = 5,050.50/x
  3. Step 3: Cross multiply
    18,901.62x = 28,352.79 × 5,050.50
  4. Step 4: Simplify right side
    18,901.62x = 143,195,765.90
  5. Step 5: Solve for x
    x = 143,195,765.90/18,901.62
  6. Step 6: Final answer
    x = 7,575.85

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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.