Home / 20,605.26-28,435.81-11,654.10

Finding the Fourth Proportional to 20,605.26, 28,435.81 and 11,654.10

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Solution

The fourth proportional to 20,605.26, 28,435.81 and 11,654.10 is: 16,082.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.26 : 28,435.81 = 11,654.10 : x
  2. Step 2: Convert to fraction form
    20,605.26/28,435.81 = 11,654.10/x
  3. Step 3: Cross multiply
    20,605.26x = 28,435.81 × 11,654.10
  4. Step 4: Simplify right side
    20,605.26x = 331,393,773.32
  5. Step 5: Solve for x
    x = 331,393,773.32/20,605.26
  6. Step 6: Final answer
    x = 16,082.97

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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.