Home / 20,393.80-28,143.34-11,441.30

Finding the Fourth Proportional to 20,393.80, 28,143.34 and 11,441.30

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Solution

The fourth proportional to 20,393.80, 28,143.34 and 11,441.30 is: 15,788.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.80 : 28,143.34 = 11,441.30 : x
  2. Step 2: Convert to fraction form
    20,393.80/28,143.34 = 11,441.30/x
  3. Step 3: Cross multiply
    20,393.80x = 28,143.34 × 11,441.30
  4. Step 4: Simplify right side
    20,393.80x = 321,996,226.62
  5. Step 5: Solve for x
    x = 321,996,226.62/20,393.80
  6. Step 6: Final answer
    x = 15,788.93

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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.