Home / 39,917.30-59,889.65-13,640.49

Finding the Fourth Proportional to 39,917.30, 59,889.65 and 13,640.49

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Solution

The fourth proportional to 39,917.30, 59,889.65 and 13,640.49 is: 20,465.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,917.30 : 59,889.65 = 13,640.49 : x
  2. Step 2: Convert to fraction form
    39,917.30/59,889.65 = 13,640.49/x
  3. Step 3: Cross multiply
    39,917.30x = 59,889.65 × 13,640.49
  4. Step 4: Simplify right side
    39,917.30x = 816,924,103.73
  5. Step 5: Solve for x
    x = 816,924,103.73/39,917.30
  6. Step 6: Final answer
    x = 20,465.42

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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.