Home / 13,772.89-18,989.13-11,252.44

Finding the Fourth Proportional to 13,772.89, 18,989.13 and 11,252.44

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Solution

The fourth proportional to 13,772.89, 18,989.13 and 11,252.44 is: 15,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.89 : 18,989.13 = 11,252.44 : x
  2. Step 2: Convert to fraction form
    13,772.89/18,989.13 = 11,252.44/x
  3. Step 3: Cross multiply
    13,772.89x = 18,989.13 × 11,252.44
  4. Step 4: Simplify right side
    13,772.89x = 213,674,045.98
  5. Step 5: Solve for x
    x = 213,674,045.98/13,772.89
  6. Step 6: Final answer
    x = 15,514.10

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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.