Home / 12,542.67-18,815.63-3,778.47

Finding the Fourth Proportional to 12,542.67, 18,815.63 and 3,778.47

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Solution

The fourth proportional to 12,542.67, 18,815.63 and 3,778.47 is: 5,668.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,542.67 : 18,815.63 = 3,778.47 : x
  2. Step 2: Convert to fraction form
    12,542.67/18,815.63 = 3,778.47/x
  3. Step 3: Cross multiply
    12,542.67x = 18,815.63 × 3,778.47
  4. Step 4: Simplify right side
    12,542.67x = 71,094,274.59
  5. Step 5: Solve for x
    x = 71,094,274.59/12,542.67
  6. Step 6: Final answer
    x = 5,668.19

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1.5x scale

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.