Home / 20,633.78-28,474.66-11,202.14

Finding the Fourth Proportional to 20,633.78, 28,474.66 and 11,202.14

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Solution

The fourth proportional to 20,633.78, 28,474.66 and 11,202.14 is: 15,458.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.78 : 28,474.66 = 11,202.14 : x
  2. Step 2: Convert to fraction form
    20,633.78/28,474.66 = 11,202.14/x
  3. Step 3: Cross multiply
    20,633.78x = 28,474.66 × 11,202.14
  4. Step 4: Simplify right side
    20,633.78x = 318,977,127.77
  5. Step 5: Solve for x
    x = 318,977,127.77/20,633.78
  6. Step 6: Final answer
    x = 15,458.98

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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.