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Finding the Fourth Proportional to 13,281.80, 19,922.70 and 11,167.70

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Solution

The fourth proportional to 13,281.80, 19,922.70 and 11,167.70 is: 16,751.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.80 : 19,922.70 = 11,167.70 : x
  2. Step 2: Convert to fraction form
    13,281.80/19,922.70 = 11,167.70/x
  3. Step 3: Cross multiply
    13,281.80x = 19,922.70 × 11,167.70
  4. Step 4: Simplify right side
    13,281.80x = 222,490,736.79
  5. Step 5: Solve for x
    x = 222,490,736.79/13,281.80
  6. Step 6: Final answer
    x = 16,751.55

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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.