Home / 20,517.16-28,313.34-11,564.68

Finding the Fourth Proportional to 20,517.16, 28,313.34 and 11,564.68

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Solution

The fourth proportional to 20,517.16, 28,313.34 and 11,564.68 is: 15,959.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.16 : 28,313.34 = 11,564.68 : x
  2. Step 2: Convert to fraction form
    20,517.16/28,313.34 = 11,564.68/x
  3. Step 3: Cross multiply
    20,517.16x = 28,313.34 × 11,564.68
  4. Step 4: Simplify right side
    20,517.16x = 327,434,716.83
  5. Step 5: Solve for x
    x = 327,434,716.83/20,517.16
  6. Step 6: Final answer
    x = 15,959.07

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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.