Home / 22,201.66-30,638.31-12,770.20

Finding the Fourth Proportional to 22,201.66, 30,638.31 and 12,770.20

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Solution

The fourth proportional to 22,201.66, 30,638.31 and 12,770.20 is: 17,622.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,201.66 : 30,638.31 = 12,770.20 : x
  2. Step 2: Convert to fraction form
    22,201.66/30,638.31 = 12,770.20/x
  3. Step 3: Cross multiply
    22,201.66x = 30,638.31 × 12,770.20
  4. Step 4: Simplify right side
    22,201.66x = 391,257,346.36
  5. Step 5: Solve for x
    x = 391,257,346.36/22,201.66
  6. Step 6: Final answer
    x = 17,622.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.