Home / 20,890.05-31,347.83-9,046.99

Finding the Fourth Proportional to 20,890.05, 31,347.83 and 9,046.99

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Solution

The fourth proportional to 20,890.05, 31,347.83 and 9,046.99 is: 13,576.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890.05 : 31,347.83 = 9,046.99 : x
  2. Step 2: Convert to fraction form
    20,890.05/31,347.83 = 9,046.99/x
  3. Step 3: Cross multiply
    20,890.05x = 31,347.83 × 9,046.99
  4. Step 4: Simplify right side
    20,890.05x = 283,603,504.53
  5. Step 5: Solve for x
    x = 283,603,504.53/20,890.05
  6. Step 6: Final answer
    x = 13,576.01

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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.