Home / 39,867.80-55,016.87-21,964.46

Finding the Fourth Proportional to 39,867.80, 55,016.87 and 21,964.46

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Solution

The fourth proportional to 39,867.80, 55,016.87 and 21,964.46 is: 30,310.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,867.80 : 55,016.87 = 21,964.46 : x
  2. Step 2: Convert to fraction form
    39,867.80/55,016.87 = 21,964.46/x
  3. Step 3: Cross multiply
    39,867.80x = 55,016.87 × 21,964.46
  4. Step 4: Simplify right side
    39,867.80x = 1,208,415,455.53
  5. Step 5: Solve for x
    x = 1,208,415,455.53/39,867.80
  6. Step 6: Final answer
    x = 30,310.57

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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.