Home / 28,670.82-39,507.39-21,956.46

Finding the Fourth Proportional to 28,670.82, 39,507.39 and 21,956.46

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Solution

The fourth proportional to 28,670.82, 39,507.39 and 21,956.46 is: 30,255.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,670.82 : 39,507.39 = 21,956.46 : x
  2. Step 2: Convert to fraction form
    28,670.82/39,507.39 = 21,956.46/x
  3. Step 3: Cross multiply
    28,670.82x = 39,507.39 × 21,956.46
  4. Step 4: Simplify right side
    28,670.82x = 867,442,428.24
  5. Step 5: Solve for x
    x = 867,442,428.24/28,670.82
  6. Step 6: Final answer
    x = 30,255.24

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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.