Home / 22,201.05-33,143.40-21,422.55

Finding the Fourth Proportional to 22,201.05, 33,143.40 and 21,422.55

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Solution

The fourth proportional to 22,201.05, 33,143.40 and 21,422.55 is: 31,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,201.05 : 33,143.40 = 21,422.55 : x
  2. Step 2: Convert to fraction form
    22,201.05/33,143.40 = 21,422.55/x
  3. Step 3: Cross multiply
    22,201.05x = 33,143.40 × 21,422.55
  4. Step 4: Simplify right side
    22,201.05x = 710,016,143.67
  5. Step 5: Solve for x
    x = 710,016,143.67/22,201.05
  6. Step 6: Final answer
    x = 31,981.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.