Home / 39,808.40-54,934.96-21,902.32

Finding the Fourth Proportional to 39,808.40, 54,934.96 and 21,902.32

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Solution

The fourth proportional to 39,808.40, 54,934.96 and 21,902.32 is: 30,224.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,808.40 : 54,934.96 = 21,902.32 : x
  2. Step 2: Convert to fraction form
    39,808.40/54,934.96 = 21,902.32/x
  3. Step 3: Cross multiply
    39,808.40x = 54,934.96 × 21,902.32
  4. Step 4: Simplify right side
    39,808.40x = 1,203,203,073.11
  5. Step 5: Solve for x
    x = 1,203,203,073.11/39,808.40
  6. Step 6: Final answer
    x = 30,224.85

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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.