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Finding the Fourth Proportional to 19,167.84, 28,766.95 and 8,082.18

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Solution

The fourth proportional to 19,167.84, 28,766.95 and 8,082.18 is: 12,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,167.84 : 28,766.95 = 8,082.18 : x
  2. Step 2: Convert to fraction form
    19,167.84/28,766.95 = 8,082.18/x
  3. Step 3: Cross multiply
    19,167.84x = 28,766.95 × 8,082.18
  4. Step 4: Simplify right side
    19,167.84x = 232,499,647.75
  5. Step 5: Solve for x
    x = 232,499,647.75/19,167.84
  6. Step 6: Final answer
    x = 12,129.67

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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.