Home / 15,109.44-20,845.20-11,139.96

Finding the Fourth Proportional to 15,109.44, 20,845.20 and 11,139.96

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Solution

The fourth proportional to 15,109.44, 20,845.20 and 11,139.96 is: 15,368.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.44 : 20,845.20 = 11,139.96 : x
  2. Step 2: Convert to fraction form
    15,109.44/20,845.20 = 11,139.96/x
  3. Step 3: Cross multiply
    15,109.44x = 20,845.20 × 11,139.96
  4. Step 4: Simplify right side
    15,109.44x = 232,214,694.19
  5. Step 5: Solve for x
    x = 232,214,694.19/15,109.44
  6. Step 6: Final answer
    x = 15,368.85

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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.