Home / 12,791.04-17,649.60-7,124.64

Finding the Fourth Proportional to 12,791.04, 17,649.60 and 7,124.64

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Solution

The fourth proportional to 12,791.04, 17,649.60 and 7,124.64 is: 9,830.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791.04 : 17,649.60 = 7,124.64 : x
  2. Step 2: Convert to fraction form
    12,791.04/17,649.60 = 7,124.64/x
  3. Step 3: Cross multiply
    12,791.04x = 17,649.60 × 7,124.64
  4. Step 4: Simplify right side
    12,791.04x = 125,747,046.14
  5. Step 5: Solve for x
    x = 125,747,046.14/12,791.04
  6. Step 6: Final answer
    x = 9,830.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.