Home / 39,680.51-54,760.68-21,776.15

Finding the Fourth Proportional to 39,680.51, 54,760.68 and 21,776.15

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Solution

The fourth proportional to 39,680.51, 54,760.68 and 21,776.15 is: 30,051.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,680.51 : 54,760.68 = 21,776.15 : x
  2. Step 2: Convert to fraction form
    39,680.51/54,760.68 = 21,776.15/x
  3. Step 3: Cross multiply
    39,680.51x = 54,760.68 × 21,776.15
  4. Step 4: Simplify right side
    39,680.51x = 1,192,476,672.90
  5. Step 5: Solve for x
    x = 1,192,476,672.90/39,680.51
  6. Step 6: Final answer
    x = 30,051.95

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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.