Home / 20,468.54-28,246.85-11,515.21

Finding the Fourth Proportional to 20,468.54, 28,246.85 and 11,515.21

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Solution

The fourth proportional to 20,468.54, 28,246.85 and 11,515.21 is: 15,891.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.54 : 28,246.85 = 11,515.21 : x
  2. Step 2: Convert to fraction form
    20,468.54/28,246.85 = 11,515.21/x
  3. Step 3: Cross multiply
    20,468.54x = 28,246.85 × 11,515.21
  4. Step 4: Simplify right side
    20,468.54x = 325,268,409.59
  5. Step 5: Solve for x
    x = 325,268,409.59/20,468.54
  6. Step 6: Final answer
    x = 15,891.14

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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.