Home / 20,489.03-28,281.13-11,993.14

Finding the Fourth Proportional to 20,489.03, 28,281.13 and 11,993.14

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Solution

The fourth proportional to 20,489.03, 28,281.13 and 11,993.14 is: 16,554.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.03 : 28,281.13 = 11,993.14 : x
  2. Step 2: Convert to fraction form
    20,489.03/28,281.13 = 11,993.14/x
  3. Step 3: Cross multiply
    20,489.03x = 28,281.13 × 11,993.14
  4. Step 4: Simplify right side
    20,489.03x = 339,179,551.45
  5. Step 5: Solve for x
    x = 339,179,551.45/20,489.03
  6. Step 6: Final answer
    x = 16,554.20

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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.