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Finding the Fourth Proportional to 22,291.80, 33,389.10 and 19,829.40

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Solution

The fourth proportional to 22,291.80, 33,389.10 and 19,829.40 is: 29,700.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,291.80 : 33,389.10 = 19,829.40 : x
  2. Step 2: Convert to fraction form
    22,291.80/33,389.10 = 19,829.40/x
  3. Step 3: Cross multiply
    22,291.80x = 33,389.10 × 19,829.40
  4. Step 4: Simplify right side
    22,291.80x = 662,085,819.54
  5. Step 5: Solve for x
    x = 662,085,819.54/22,291.80
  6. Step 6: Final answer
    x = 29,700.87

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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.