Home / 39,860.06-55,007.22-21,955.68

Finding the Fourth Proportional to 39,860.06, 55,007.22 and 21,955.68

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Solution

The fourth proportional to 39,860.06, 55,007.22 and 21,955.68 is: 30,299.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,860.06 : 55,007.22 = 21,955.68 : x
  2. Step 2: Convert to fraction form
    39,860.06/55,007.22 = 21,955.68/x
  3. Step 3: Cross multiply
    39,860.06x = 55,007.22 × 21,955.68
  4. Step 4: Simplify right side
    39,860.06x = 1,207,720,920.01
  5. Step 5: Solve for x
    x = 1,207,720,920.01/39,860.06
  6. Step 6: Final answer
    x = 30,299.02

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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.