Home / 39,425.09-59,138.24-13,129.85

Finding the Fourth Proportional to 39,425.09, 59,138.24 and 13,129.85

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Solution

The fourth proportional to 39,425.09, 59,138.24 and 13,129.85 is: 19,694.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,425.09 : 59,138.24 = 13,129.85 : x
  2. Step 2: Convert to fraction form
    39,425.09/59,138.24 = 13,129.85/x
  3. Step 3: Cross multiply
    39,425.09x = 59,138.24 × 13,129.85
  4. Step 4: Simplify right side
    39,425.09x = 776,476,302.66
  5. Step 5: Solve for x
    x = 776,476,302.66/39,425.09
  6. Step 6: Final answer
    x = 19,694.98

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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.