Home / 20,113.11-27,756.09-11,160.68

Finding the Fourth Proportional to 20,113.11, 27,756.09 and 11,160.68

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Solution

The fourth proportional to 20,113.11, 27,756.09 and 11,160.68 is: 15,401.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.11 : 27,756.09 = 11,160.68 : x
  2. Step 2: Convert to fraction form
    20,113.11/27,756.09 = 11,160.68/x
  3. Step 3: Cross multiply
    20,113.11x = 27,756.09 × 11,160.68
  4. Step 4: Simplify right side
    20,113.11x = 309,776,699.76
  5. Step 5: Solve for x
    x = 309,776,699.76/20,113.11
  6. Step 6: Final answer
    x = 15,401.73

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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.