Home / 20,789.20-28,656.30-19,073.08

Finding the Fourth Proportional to 20,789.20, 28,656.30 and 19,073.08

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Solution

The fourth proportional to 20,789.20, 28,656.30 and 19,073.08 is: 26,290.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,789.20 : 28,656.30 = 19,073.08 : x
  2. Step 2: Convert to fraction form
    20,789.20/28,656.30 = 19,073.08/x
  3. Step 3: Cross multiply
    20,789.20x = 28,656.30 × 19,073.08
  4. Step 4: Simplify right side
    20,789.20x = 546,563,902.40
  5. Step 5: Solve for x
    x = 546,563,902.40/20,789.20
  6. Step 6: Final answer
    x = 26,290.76

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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.