Home / 39,859.80-55,006.89-21,955.44

Finding the Fourth Proportional to 39,859.80, 55,006.89 and 21,955.44

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Solution

The fourth proportional to 39,859.80, 55,006.89 and 21,955.44 is: 30,298.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,859.80 : 55,006.89 = 21,955.44 : x
  2. Step 2: Convert to fraction form
    39,859.80/55,006.89 = 21,955.44/x
  3. Step 3: Cross multiply
    39,859.80x = 55,006.89 × 21,955.44
  4. Step 4: Simplify right side
    39,859.80x = 1,207,700,472.98
  5. Step 5: Solve for x
    x = 1,207,700,472.98/39,859.80
  6. Step 6: Final answer
    x = 30,298.71

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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.