Home / 20,113.74-27,756.87-11,161.86

Finding the Fourth Proportional to 20,113.74, 27,756.87 and 11,161.86

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Solution

The fourth proportional to 20,113.74, 27,756.87 and 11,161.86 is: 15,403.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.74 : 27,756.87 = 11,161.86 : x
  2. Step 2: Convert to fraction form
    20,113.74/27,756.87 = 11,161.86/x
  3. Step 3: Cross multiply
    20,113.74x = 27,756.87 × 11,161.86
  4. Step 4: Simplify right side
    20,113.74x = 309,818,296.98
  5. Step 5: Solve for x
    x = 309,818,296.98/20,113.74
  6. Step 6: Final answer
    x = 15,403.32

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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.