Home / 39,680.40-54,757.12-21,774.96

Finding the Fourth Proportional to 39,680.40, 54,757.12 and 21,774.96

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Solution

The fourth proportional to 39,680.40, 54,757.12 and 21,774.96 is: 30,048.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,680.40 : 54,757.12 = 21,774.96 : x
  2. Step 2: Convert to fraction form
    39,680.40/54,757.12 = 21,774.96/x
  3. Step 3: Cross multiply
    39,680.40x = 54,757.12 × 21,774.96
  4. Step 4: Simplify right side
    39,680.40x = 1,192,334,097.72
  5. Step 5: Solve for x
    x = 1,192,334,097.72/39,680.40
  6. Step 6: Final answer
    x = 30,048.44

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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.