Home / 20,788.70-31,323.43-17,171.96

Finding the Fourth Proportional to 20,788.70, 31,323.43 and 17,171.96

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Solution

The fourth proportional to 20,788.70, 31,323.43 and 17,171.96 is: 25,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.70 : 31,323.43 = 17,171.96 : x
  2. Step 2: Convert to fraction form
    20,788.70/31,323.43 = 17,171.96/x
  3. Step 3: Cross multiply
    20,788.70x = 31,323.43 × 17,171.96
  4. Step 4: Simplify right side
    20,788.70x = 537,884,687.02
  5. Step 5: Solve for x
    x = 537,884,687.02/20,788.70
  6. Step 6: Final answer
    x = 25,873.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.