Home / 20,426.64-28,184.39-11,924.90

Finding the Fourth Proportional to 20,426.64, 28,184.39 and 11,924.90

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Solution

The fourth proportional to 20,426.64, 28,184.39 and 11,924.90 is: 16,453.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.64 : 28,184.39 = 11,924.90 : x
  2. Step 2: Convert to fraction form
    20,426.64/28,184.39 = 11,924.90/x
  3. Step 3: Cross multiply
    20,426.64x = 28,184.39 × 11,924.90
  4. Step 4: Simplify right side
    20,426.64x = 336,096,032.31
  5. Step 5: Solve for x
    x = 336,096,032.31/20,426.64
  6. Step 6: Final answer
    x = 16,453.81

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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.