Home / 39,902.17-55,065.38-21,997.83

Finding the Fourth Proportional to 39,902.17, 55,065.38 and 21,997.83

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Solution

The fourth proportional to 39,902.17, 55,065.38 and 21,997.83 is: 30,357.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,902.17 : 55,065.38 = 21,997.83 : x
  2. Step 2: Convert to fraction form
    39,902.17/55,065.38 = 21,997.83/x
  3. Step 3: Cross multiply
    39,902.17x = 55,065.38 × 21,997.83
  4. Step 4: Simplify right side
    39,902.17x = 1,211,318,868.13
  5. Step 5: Solve for x
    x = 1,211,318,868.13/39,902.17
  6. Step 6: Final answer
    x = 30,357.22

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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.