Home / 12,578.76-17,353.62-11,215.44

Finding the Fourth Proportional to 12,578.76, 17,353.62 and 11,215.44

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Solution

The fourth proportional to 12,578.76, 17,353.62 and 11,215.44 is: 15,472.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.76 : 17,353.62 = 11,215.44 : x
  2. Step 2: Convert to fraction form
    12,578.76/17,353.62 = 11,215.44/x
  3. Step 3: Cross multiply
    12,578.76x = 17,353.62 × 11,215.44
  4. Step 4: Simplify right side
    12,578.76x = 194,628,483.89
  5. Step 5: Solve for x
    x = 194,628,483.89/12,578.76
  6. Step 6: Final answer
    x = 15,472.79

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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.