Home / 20,443.56-28,204.12-11,489.02

Finding the Fourth Proportional to 20,443.56, 28,204.12 and 11,489.02

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Solution

The fourth proportional to 20,443.56, 28,204.12 and 11,489.02 is: 15,850.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.56 : 28,204.12 = 11,489.02 : x
  2. Step 2: Convert to fraction form
    20,443.56/28,204.12 = 11,489.02/x
  3. Step 3: Cross multiply
    20,443.56x = 28,204.12 × 11,489.02
  4. Step 4: Simplify right side
    20,443.56x = 324,037,698.76
  5. Step 5: Solve for x
    x = 324,037,698.76/20,443.56
  6. Step 6: Final answer
    x = 15,850.36

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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.