Home / 39,759.49-54,868.23-21,856.33

Finding the Fourth Proportional to 39,759.49, 54,868.23 and 21,856.33

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Solution

The fourth proportional to 39,759.49, 54,868.23 and 21,856.33 is: 30,161.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,759.49 : 54,868.23 = 21,856.33 : x
  2. Step 2: Convert to fraction form
    39,759.49/54,868.23 = 21,856.33/x
  3. Step 3: Cross multiply
    39,759.49x = 54,868.23 × 21,856.33
  4. Step 4: Simplify right side
    39,759.49x = 1,199,218,141.40
  5. Step 5: Solve for x
    x = 1,199,218,141.40/39,759.49
  6. Step 6: Final answer
    x = 30,161.81

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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.