Home / 39,872.82-55,023.18-21,967.76

Finding the Fourth Proportional to 39,872.82, 55,023.18 and 21,967.76

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Solution

The fourth proportional to 39,872.82, 55,023.18 and 21,967.76 is: 30,314.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872.82 : 55,023.18 = 21,967.76 : x
  2. Step 2: Convert to fraction form
    39,872.82/55,023.18 = 21,967.76/x
  3. Step 3: Cross multiply
    39,872.82x = 55,023.18 × 21,967.76
  4. Step 4: Simplify right side
    39,872.82x = 1,208,736,012.68
  5. Step 5: Solve for x
    x = 1,208,736,012.68/39,872.82
  6. Step 6: Final answer
    x = 30,314.79

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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.