Home / 39,975.48-59,964.18-13,680

Finding the Fourth Proportional to 39,975.48, 59,964.18 and 13,680

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Solution

The fourth proportional to 39,975.48, 59,964.18 and 13,680 is: 20,520.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,975.48 : 59,964.18 = 13,680 : x
  2. Step 2: Convert to fraction form
    39,975.48/59,964.18 = 13,680/x
  3. Step 3: Cross multiply
    39,975.48x = 59,964.18 × 13,680
  4. Step 4: Simplify right side
    39,975.48x = 820,309,982.40
  5. Step 5: Solve for x
    x = 820,309,982.40/39,975.48
  6. Step 6: Final answer
    x = 20,520.33

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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.