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Finding the Fourth Proportional to 13,354.80, 20,122.44 and 11,065.74

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Solution

The fourth proportional to 13,354.80, 20,122.44 and 11,065.74 is: 16,673.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.80 : 20,122.44 = 11,065.74 : x
  2. Step 2: Convert to fraction form
    13,354.80/20,122.44 = 11,065.74/x
  3. Step 3: Cross multiply
    13,354.80x = 20,122.44 × 11,065.74
  4. Step 4: Simplify right side
    13,354.80x = 222,669,689.21
  5. Step 5: Solve for x
    x = 222,669,689.21/13,354.80
  6. Step 6: Final answer
    x = 16,673.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.