Home / 21,983.04-30,341.17-20,211.84

Finding the Fourth Proportional to 21,983.04, 30,341.17 and 20,211.84

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Solution

The fourth proportional to 21,983.04, 30,341.17 and 20,211.84 is: 27,896.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.04 : 30,341.17 = 20,211.84 : x
  2. Step 2: Convert to fraction form
    21,983.04/30,341.17 = 20,211.84/x
  3. Step 3: Cross multiply
    21,983.04x = 30,341.17 × 20,211.84
  4. Step 4: Simplify right side
    21,983.04x = 613,250,721.75
  5. Step 5: Solve for x
    x = 613,250,721.75/21,983.04
  6. Step 6: Final answer
    x = 27,896.54

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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.