Home / 20,358.68-28,094.39-11,406.71

Finding the Fourth Proportional to 20,358.68, 28,094.39 and 11,406.71

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Solution

The fourth proportional to 20,358.68, 28,094.39 and 11,406.71 is: 15,740.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.68 : 28,094.39 = 11,406.71 : x
  2. Step 2: Convert to fraction form
    20,358.68/28,094.39 = 11,406.71/x
  3. Step 3: Cross multiply
    20,358.68x = 28,094.39 × 11,406.71
  4. Step 4: Simplify right side
    20,358.68x = 320,464,361.85
  5. Step 5: Solve for x
    x = 320,464,361.85/20,358.68
  6. Step 6: Final answer
    x = 15,740.92

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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.