Home / 20,709.09-31,046.19-9,013.50

Finding the Fourth Proportional to 20,709.09, 31,046.19 and 9,013.50

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Solution

The fourth proportional to 20,709.09, 31,046.19 and 9,013.50 is: 13,512.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.09 : 31,046.19 = 9,013.50 : x
  2. Step 2: Convert to fraction form
    20,709.09/31,046.19 = 9,013.50/x
  3. Step 3: Cross multiply
    20,709.09x = 31,046.19 × 9,013.50
  4. Step 4: Simplify right side
    20,709.09x = 279,834,833.57
  5. Step 5: Solve for x
    x = 279,834,833.57/20,709.09
  6. Step 6: Final answer
    x = 13,512.66

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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.