Home / 19,540.80-26,964.36-11,157.12

Finding the Fourth Proportional to 19,540.80, 26,964.36 and 11,157.12

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Solution

The fourth proportional to 19,540.80, 26,964.36 and 11,157.12 is: 15,395.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,540.80 : 26,964.36 = 11,157.12 : x
  2. Step 2: Convert to fraction form
    19,540.80/26,964.36 = 11,157.12/x
  3. Step 3: Cross multiply
    19,540.80x = 26,964.36 × 11,157.12
  4. Step 4: Simplify right side
    19,540.80x = 300,844,600.24
  5. Step 5: Solve for x
    x = 300,844,600.24/19,540.80
  6. Step 6: Final answer
    x = 15,395.72

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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.