Home / 39,680.35-54,760.28-21,775.51

Finding the Fourth Proportional to 39,680.35, 54,760.28 and 21,775.51

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Solution

The fourth proportional to 39,680.35, 54,760.28 and 21,775.51 is: 30,050.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,680.35 : 54,760.28 = 21,775.51 : x
  2. Step 2: Convert to fraction form
    39,680.35/54,760.28 = 21,775.51/x
  3. Step 3: Cross multiply
    39,680.35x = 54,760.28 × 21,775.51
  4. Step 4: Simplify right side
    39,680.35x = 1,192,432,750.94
  5. Step 5: Solve for x
    x = 1,192,432,750.94/39,680.35
  6. Step 6: Final answer
    x = 30,050.96

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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.