Home / 20,160.96-27,820.91-11,208.15

Finding the Fourth Proportional to 20,160.96, 27,820.91 and 11,208.15

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Solution

The fourth proportional to 20,160.96, 27,820.91 and 11,208.15 is: 15,466.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.96 : 27,820.91 = 11,208.15 : x
  2. Step 2: Convert to fraction form
    20,160.96/27,820.91 = 11,208.15/x
  3. Step 3: Cross multiply
    20,160.96x = 27,820.91 × 11,208.15
  4. Step 4: Simplify right side
    20,160.96x = 311,820,876.38
  5. Step 5: Solve for x
    x = 311,820,876.38/20,160.96
  6. Step 6: Final answer
    x = 15,466.57

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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.