Home / 20,226.80-27,912.06-11,275.28

Finding the Fourth Proportional to 20,226.80, 27,912.06 and 11,275.28

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Solution

The fourth proportional to 20,226.80, 27,912.06 and 11,275.28 is: 15,559.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,226.80 : 27,912.06 = 11,275.28 : x
  2. Step 2: Convert to fraction form
    20,226.80/27,912.06 = 11,275.28/x
  3. Step 3: Cross multiply
    20,226.80x = 27,912.06 × 11,275.28
  4. Step 4: Simplify right side
    20,226.80x = 314,716,291.88
  5. Step 5: Solve for x
    x = 314,716,291.88/20,226.80
  6. Step 6: Final answer
    x = 15,559.37

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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.