Home / 12,427.75-17,151.04-7,122.91

Finding the Fourth Proportional to 12,427.75, 17,151.04 and 7,122.91

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Solution

The fourth proportional to 12,427.75, 17,151.04 and 7,122.91 is: 9,830.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.75 : 17,151.04 = 7,122.91 : x
  2. Step 2: Convert to fraction form
    12,427.75/17,151.04 = 7,122.91/x
  3. Step 3: Cross multiply
    12,427.75x = 17,151.04 × 7,122.91
  4. Step 4: Simplify right side
    12,427.75x = 122,165,309.05
  5. Step 5: Solve for x
    x = 122,165,309.05/12,427.75
  6. Step 6: Final answer
    x = 9,830.04

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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.