Home / 20,425.15-28,189.99-19,091.08

Finding the Fourth Proportional to 20,425.15, 28,189.99 and 19,091.08

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Solution

The fourth proportional to 20,425.15, 28,189.99 and 19,091.08 is: 26,348.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.15 : 28,189.99 = 19,091.08 : x
  2. Step 2: Convert to fraction form
    20,425.15/28,189.99 = 19,091.08/x
  3. Step 3: Cross multiply
    20,425.15x = 28,189.99 × 19,091.08
  4. Step 4: Simplify right side
    20,425.15x = 538,177,354.29
  5. Step 5: Solve for x
    x = 538,177,354.29/20,425.15
  6. Step 6: Final answer
    x = 26,348.76

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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.