Home / 15,171.90-20,939.75-11,204.47

Finding the Fourth Proportional to 15,171.90, 20,939.75 and 11,204.47

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Solution

The fourth proportional to 15,171.90, 20,939.75 and 11,204.47 is: 15,464.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171.90 : 20,939.75 = 11,204.47 : x
  2. Step 2: Convert to fraction form
    15,171.90/20,939.75 = 11,204.47/x
  3. Step 3: Cross multiply
    15,171.90x = 20,939.75 × 11,204.47
  4. Step 4: Simplify right side
    15,171.90x = 234,618,800.68
  5. Step 5: Solve for x
    x = 234,618,800.68/15,171.90
  6. Step 6: Final answer
    x = 15,464.04

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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.