Home / 20,113.38-27,756.56-11,160.88

Finding the Fourth Proportional to 20,113.38, 27,756.56 and 11,160.88

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Solution

The fourth proportional to 20,113.38, 27,756.56 and 11,160.88 is: 15,402.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.38 : 27,756.56 = 11,160.88 : x
  2. Step 2: Convert to fraction form
    20,113.38/27,756.56 = 11,160.88/x
  3. Step 3: Cross multiply
    20,113.38x = 27,756.56 × 11,160.88
  4. Step 4: Simplify right side
    20,113.38x = 309,787,635.37
  5. Step 5: Solve for x
    x = 309,787,635.37/20,113.38
  6. Step 6: Final answer
    x = 15,402.07

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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.