Home / 22,469.40-31,009.10-12,400.09

Finding the Fourth Proportional to 22,469.40, 31,009.10 and 12,400.09

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Solution

The fourth proportional to 22,469.40, 31,009.10 and 12,400.09 is: 17,112.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,469.40 : 31,009.10 = 12,400.09 : x
  2. Step 2: Convert to fraction form
    22,469.40/31,009.10 = 12,400.09/x
  3. Step 3: Cross multiply
    22,469.40x = 31,009.10 × 12,400.09
  4. Step 4: Simplify right side
    22,469.40x = 384,515,491.30
  5. Step 5: Solve for x
    x = 384,515,491.30/22,469.40
  6. Step 6: Final answer
    x = 17,112.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.