Home / 20,494.71-28,282.78-11,542.36

Finding the Fourth Proportional to 20,494.71, 28,282.78 and 11,542.36

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Solution

The fourth proportional to 20,494.71, 28,282.78 and 11,542.36 is: 15,928.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,494.71 : 28,282.78 = 11,542.36 : x
  2. Step 2: Convert to fraction form
    20,494.71/28,282.78 = 11,542.36/x
  3. Step 3: Cross multiply
    20,494.71x = 28,282.78 × 11,542.36
  4. Step 4: Simplify right side
    20,494.71x = 326,450,007.64
  5. Step 5: Solve for x
    x = 326,450,007.64/20,494.71
  6. Step 6: Final answer
    x = 15,928.50

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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.