Home / 20,633.70-28,474.29-11,202.30

Finding the Fourth Proportional to 20,633.70, 28,474.29 and 11,202.30

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Solution

The fourth proportional to 20,633.70, 28,474.29 and 11,202.30 is: 15,459.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.70 : 28,474.29 = 11,202.30 : x
  2. Step 2: Convert to fraction form
    20,633.70/28,474.29 = 11,202.30/x
  3. Step 3: Cross multiply
    20,633.70x = 28,474.29 × 11,202.30
  4. Step 4: Simplify right side
    20,633.70x = 318,977,538.87
  5. Step 5: Solve for x
    x = 318,977,538.87/20,633.70
  6. Step 6: Final answer
    x = 15,459.06

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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.