Home / 20,434.32-28,199.34-11,942.28

Finding the Fourth Proportional to 20,434.32, 28,199.34 and 11,942.28

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Solution

The fourth proportional to 20,434.32, 28,199.34 and 11,942.28 is: 16,480.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.32 : 28,199.34 = 11,942.28 : x
  2. Step 2: Convert to fraction form
    20,434.32/28,199.34 = 11,942.28/x
  3. Step 3: Cross multiply
    20,434.32x = 28,199.34 × 11,942.28
  4. Step 4: Simplify right side
    20,434.32x = 336,764,414.10
  5. Step 5: Solve for x
    x = 336,764,414.10/20,434.32
  6. Step 6: Final answer
    x = 16,480.33

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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.