Home / 30,210.10-41,724.84-20,121.94

Finding the Fourth Proportional to 30,210.10, 41,724.84 and 20,121.94

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Solution

The fourth proportional to 30,210.10, 41,724.84 and 20,121.94 is: 27,791.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.10 : 41,724.84 = 20,121.94 : x
  2. Step 2: Convert to fraction form
    30,210.10/41,724.84 = 20,121.94/x
  3. Step 3: Cross multiply
    30,210.10x = 41,724.84 × 20,121.94
  4. Step 4: Simplify right side
    30,210.10x = 839,584,726.99
  5. Step 5: Solve for x
    x = 839,584,726.99/30,210.10
  6. Step 6: Final answer
    x = 27,791.52

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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.