Home / 20,947.83-31,396.17-9,839.68

Finding the Fourth Proportional to 20,947.83, 31,396.17 and 9,839.68

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Solution

The fourth proportional to 20,947.83, 31,396.17 and 9,839.68 is: 14,747.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.83 : 31,396.17 = 9,839.68 : x
  2. Step 2: Convert to fraction form
    20,947.83/31,396.17 = 9,839.68/x
  3. Step 3: Cross multiply
    20,947.83x = 31,396.17 × 9,839.68
  4. Step 4: Simplify right side
    20,947.83x = 308,928,266.03
  5. Step 5: Solve for x
    x = 308,928,266.03/20,947.83
  6. Step 6: Final answer
    x = 14,747.51

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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.