Home / 12,578.07-17,357.65-7,272.78

Finding the Fourth Proportional to 12,578.07, 17,357.65 and 7,272.78

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Solution

The fourth proportional to 12,578.07, 17,357.65 and 7,272.78 is: 10,036.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.07 : 17,357.65 = 7,272.78 : x
  2. Step 2: Convert to fraction form
    12,578.07/17,357.65 = 7,272.78/x
  3. Step 3: Cross multiply
    12,578.07x = 17,357.65 × 7,272.78
  4. Step 4: Simplify right side
    12,578.07x = 126,238,369.77
  5. Step 5: Solve for x
    x = 126,238,369.77/12,578.07
  6. Step 6: Final answer
    x = 10,036.39

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Similar ratio
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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.