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Finding the Fourth Proportional to 22,013.80, 33,020.70 and 19,421.80

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Solution

The fourth proportional to 22,013.80, 33,020.70 and 19,421.80 is: 29,132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,013.80 : 33,020.70 = 19,421.80 : x
  2. Step 2: Convert to fraction form
    22,013.80/33,020.70 = 19,421.80/x
  3. Step 3: Cross multiply
    22,013.80x = 33,020.70 × 19,421.80
  4. Step 4: Simplify right side
    22,013.80x = 641,321,431.26
  5. Step 5: Solve for x
    x = 641,321,431.26/22,013.80
  6. Step 6: Final answer
    x = 29,132.70

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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.