Home / 28,838.38-43,227.87-20,921.17

Finding the Fourth Proportional to 28,838.38, 43,227.87 and 20,921.17

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Solution

The fourth proportional to 28,838.38, 43,227.87 and 20,921.17 is: 31,360.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,838.38 : 43,227.87 = 20,921.17 : x
  2. Step 2: Convert to fraction form
    28,838.38/43,227.87 = 20,921.17/x
  3. Step 3: Cross multiply
    28,838.38x = 43,227.87 × 20,921.17
  4. Step 4: Simplify right side
    28,838.38x = 904,377,617.01
  5. Step 5: Solve for x
    x = 904,377,617.01/28,838.38
  6. Step 6: Final answer
    x = 31,360.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.