Home / 20,983.11-31,459.24-9,883.54

Finding the Fourth Proportional to 20,983.11, 31,459.24 and 9,883.54

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Solution

The fourth proportional to 20,983.11, 31,459.24 and 9,883.54 is: 14,818.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.11 : 31,459.24 = 9,883.54 : x
  2. Step 2: Convert to fraction form
    20,983.11/31,459.24 = 9,883.54/x
  3. Step 3: Cross multiply
    20,983.11x = 31,459.24 × 9,883.54
  4. Step 4: Simplify right side
    20,983.11x = 310,928,656.91
  5. Step 5: Solve for x
    x = 310,928,656.91/20,983.11
  6. Step 6: Final answer
    x = 14,818.04

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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.