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Finding the Fourth Proportional to 18,774.96, 28,171.84 and 8,775.52

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Solution

The fourth proportional to 18,774.96, 28,171.84 and 8,775.52 is: 13,167.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.96 : 28,171.84 = 8,775.52 : x
  2. Step 2: Convert to fraction form
    18,774.96/28,171.84 = 8,775.52/x
  3. Step 3: Cross multiply
    18,774.96x = 28,171.84 × 8,775.52
  4. Step 4: Simplify right side
    18,774.96x = 247,222,545.36
  5. Step 5: Solve for x
    x = 247,222,545.36/18,774.96
  6. Step 6: Final answer
    x = 13,167.67

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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.