Home / 20,550.68-28,359.95-11,119.22

Finding the Fourth Proportional to 20,550.68, 28,359.95 and 11,119.22

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Solution

The fourth proportional to 20,550.68, 28,359.95 and 11,119.22 is: 15,344.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.68 : 28,359.95 = 11,119.22 : x
  2. Step 2: Convert to fraction form
    20,550.68/28,359.95 = 11,119.22/x
  3. Step 3: Cross multiply
    20,550.68x = 28,359.95 × 11,119.22
  4. Step 4: Simplify right side
    20,550.68x = 315,340,325.84
  5. Step 5: Solve for x
    x = 315,340,325.84/20,550.68
  6. Step 6: Final answer
    x = 15,344.52

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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.