Home / 30,211.10-41,726.22-20,122.94

Finding the Fourth Proportional to 30,211.10, 41,726.22 and 20,122.94

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Solution

The fourth proportional to 30,211.10, 41,726.22 and 20,122.94 is: 27,792.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,211.10 : 41,726.22 = 20,122.94 : x
  2. Step 2: Convert to fraction form
    30,211.10/41,726.22 = 20,122.94/x
  3. Step 3: Cross multiply
    30,211.10x = 41,726.22 × 20,122.94
  4. Step 4: Simplify right side
    30,211.10x = 839,654,221.49
  5. Step 5: Solve for x
    x = 839,654,221.49/30,211.10
  6. Step 6: Final answer
    x = 27,792.90

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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.