Home / 39,976.31-59,964.77-13,681.28

Finding the Fourth Proportional to 39,976.31, 59,964.77 and 13,681.28

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Solution

The fourth proportional to 39,976.31, 59,964.77 and 13,681.28 is: 20,522.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,976.31 : 59,964.77 = 13,681.28 : x
  2. Step 2: Convert to fraction form
    39,976.31/59,964.77 = 13,681.28/x
  3. Step 3: Cross multiply
    39,976.31x = 59,964.77 × 13,681.28
  4. Step 4: Simplify right side
    39,976.31x = 820,394,992.62
  5. Step 5: Solve for x
    x = 820,394,992.62/39,976.31
  6. Step 6: Final answer
    x = 20,522.03

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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.