Home / 39,867.12-55,016.37-21,961.71

Finding the Fourth Proportional to 39,867.12, 55,016.37 and 21,961.71

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Solution

The fourth proportional to 39,867.12, 55,016.37 and 21,961.71 is: 30,307.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,867.12 : 55,016.37 = 21,961.71 : x
  2. Step 2: Convert to fraction form
    39,867.12/55,016.37 = 21,961.71/x
  3. Step 3: Cross multiply
    39,867.12x = 55,016.37 × 21,961.71
  4. Step 4: Simplify right side
    39,867.12x = 1,208,253,563.19
  5. Step 5: Solve for x
    x = 1,208,253,563.19/39,867.12
  6. Step 6: Final answer
    x = 30,307.02

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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.