Home / 39,858.39-55,003.91-21,955.07

Finding the Fourth Proportional to 39,858.39, 55,003.91 and 21,955.07

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Solution

The fourth proportional to 39,858.39, 55,003.91 and 21,955.07 is: 30,297.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,858.39 : 55,003.91 = 21,955.07 : x
  2. Step 2: Convert to fraction form
    39,858.39/55,003.91 = 21,955.07/x
  3. Step 3: Cross multiply
    39,858.39x = 55,003.91 × 21,955.07
  4. Step 4: Simplify right side
    39,858.39x = 1,207,614,309.53
  5. Step 5: Solve for x
    x = 1,207,614,309.53/39,858.39
  6. Step 6: Final answer
    x = 30,297.62

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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.