Home / 13,818.03-19,067.97-7,769.20

Finding the Fourth Proportional to 13,818.03, 19,067.97 and 7,769.20

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Solution

The fourth proportional to 13,818.03, 19,067.97 and 7,769.20 is: 10,720.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.03 : 19,067.97 = 7,769.20 : x
  2. Step 2: Convert to fraction form
    13,818.03/19,067.97 = 7,769.20/x
  3. Step 3: Cross multiply
    13,818.03x = 19,067.97 × 7,769.20
  4. Step 4: Simplify right side
    13,818.03x = 148,142,872.52
  5. Step 5: Solve for x
    x = 148,142,872.52/13,818.03
  6. Step 6: Final answer
    x = 10,720.98

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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.