Home / 13,578.99-20,374.10-7,331.66

Finding the Fourth Proportional to 13,578.99, 20,374.10 and 7,331.66

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Solution

The fourth proportional to 13,578.99, 20,374.10 and 7,331.66 is: 11,000.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.99 : 20,374.10 = 7,331.66 : x
  2. Step 2: Convert to fraction form
    13,578.99/20,374.10 = 7,331.66/x
  3. Step 3: Cross multiply
    13,578.99x = 20,374.10 × 7,331.66
  4. Step 4: Simplify right side
    13,578.99x = 149,375,890.46
  5. Step 5: Solve for x
    x = 149,375,890.46/13,578.99
  6. Step 6: Final answer
    x = 11,000.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.