Home / 20,898.42-31,338.38-9,796.14

Finding the Fourth Proportional to 20,898.42, 31,338.38 and 9,796.14

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Solution

The fourth proportional to 20,898.42, 31,338.38 and 9,796.14 is: 14,689.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.42 : 31,338.38 = 9,796.14 : x
  2. Step 2: Convert to fraction form
    20,898.42/31,338.38 = 9,796.14/x
  3. Step 3: Cross multiply
    20,898.42x = 31,338.38 × 9,796.14
  4. Step 4: Simplify right side
    20,898.42x = 306,995,157.85
  5. Step 5: Solve for x
    x = 306,995,157.85/20,898.42
  6. Step 6: Final answer
    x = 14,689.87

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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.