Home / 20,798.64-28,694.25-13,727.34

Finding the Fourth Proportional to 20,798.64, 28,694.25 and 13,727.34

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Solution

The fourth proportional to 20,798.64, 28,694.25 and 13,727.34 is: 18,938.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.64 : 28,694.25 = 13,727.34 : x
  2. Step 2: Convert to fraction form
    20,798.64/28,694.25 = 13,727.34/x
  3. Step 3: Cross multiply
    20,798.64x = 28,694.25 × 13,727.34
  4. Step 4: Simplify right side
    20,798.64x = 393,895,725.80
  5. Step 5: Solve for x
    x = 393,895,725.80/20,798.64
  6. Step 6: Final answer
    x = 18,938.53

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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.