Home / 20,758.88-28,647.15-11,327.45

Finding the Fourth Proportional to 20,758.88, 28,647.15 and 11,327.45

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Solution

The fourth proportional to 20,758.88, 28,647.15 and 11,327.45 is: 15,631.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.88 : 28,647.15 = 11,327.45 : x
  2. Step 2: Convert to fraction form
    20,758.88/28,647.15 = 11,327.45/x
  3. Step 3: Cross multiply
    20,758.88x = 28,647.15 × 11,327.45
  4. Step 4: Simplify right side
    20,758.88x = 324,499,016.03
  5. Step 5: Solve for x
    x = 324,499,016.03/20,758.88
  6. Step 6: Final answer
    x = 15,631.82

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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.