Home / 20,819.97-31,240.22-9,727.43

Finding the Fourth Proportional to 20,819.97, 31,240.22 and 9,727.43

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Solution

The fourth proportional to 20,819.97, 31,240.22 and 9,727.43 is: 14,595.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819.97 : 31,240.22 = 9,727.43 : x
  2. Step 2: Convert to fraction form
    20,819.97/31,240.22 = 9,727.43/x
  3. Step 3: Cross multiply
    20,819.97x = 31,240.22 × 9,727.43
  4. Step 4: Simplify right side
    20,819.97x = 303,886,848.40
  5. Step 5: Solve for x
    x = 303,886,848.40/20,819.97
  6. Step 6: Final answer
    x = 14,595.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.