Home / 39,901.25-55,063.89-21,995.86

Finding the Fourth Proportional to 39,901.25, 55,063.89 and 21,995.86

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Solution

The fourth proportional to 39,901.25, 55,063.89 and 21,995.86 is: 30,354.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,901.25 : 55,063.89 = 21,995.86 : x
  2. Step 2: Convert to fraction form
    39,901.25/55,063.89 = 21,995.86/x
  3. Step 3: Cross multiply
    39,901.25x = 55,063.89 × 21,995.86
  4. Step 4: Simplify right side
    39,901.25x = 1,211,177,684.33
  5. Step 5: Solve for x
    x = 1,211,177,684.33/39,901.25
  6. Step 6: Final answer
    x = 30,354.38

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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.