Home / 20,479.31-28,262.34-11,527.38

Finding the Fourth Proportional to 20,479.31, 28,262.34 and 11,527.38

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Solution

The fourth proportional to 20,479.31, 28,262.34 and 11,527.38 is: 15,908.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.31 : 28,262.34 = 11,527.38 : x
  2. Step 2: Convert to fraction form
    20,479.31/28,262.34 = 11,527.38/x
  3. Step 3: Cross multiply
    20,479.31x = 28,262.34 × 11,527.38
  4. Step 4: Simplify right side
    20,479.31x = 325,790,732.87
  5. Step 5: Solve for x
    x = 325,790,732.87/20,479.31
  6. Step 6: Final answer
    x = 15,908.29

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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.