Home / 12,418.07-17,136.90-7,112.88

Finding the Fourth Proportional to 12,418.07, 17,136.90 and 7,112.88

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Solution

The fourth proportional to 12,418.07, 17,136.90 and 7,112.88 is: 9,815.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,418.07 : 17,136.90 = 7,112.88 : x
  2. Step 2: Convert to fraction form
    12,418.07/17,136.90 = 7,112.88/x
  3. Step 3: Cross multiply
    12,418.07x = 17,136.90 × 7,112.88
  4. Step 4: Simplify right side
    12,418.07x = 121,892,713.27
  5. Step 5: Solve for x
    x = 121,892,713.27/12,418.07
  6. Step 6: Final answer
    x = 9,815.76

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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.