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Finding the Fourth Proportional to 19,302.70, 28,954.05 and 8,206.60

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Solution

The fourth proportional to 19,302.70, 28,954.05 and 8,206.60 is: 12,309.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,302.70 : 28,954.05 = 8,206.60 : x
  2. Step 2: Convert to fraction form
    19,302.70/28,954.05 = 8,206.60/x
  3. Step 3: Cross multiply
    19,302.70x = 28,954.05 × 8,206.60
  4. Step 4: Simplify right side
    19,302.70x = 237,614,306.73
  5. Step 5: Solve for x
    x = 237,614,306.73/19,302.70
  6. Step 6: Final answer
    x = 12,309.90

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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.