Home / 13,122.32-18,120.12-11,252.43

Finding the Fourth Proportional to 13,122.32, 18,120.12 and 11,252.43

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Solution

The fourth proportional to 13,122.32, 18,120.12 and 11,252.43 is: 15,538.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.32 : 18,120.12 = 11,252.43 : x
  2. Step 2: Convert to fraction form
    13,122.32/18,120.12 = 11,252.43/x
  3. Step 3: Cross multiply
    13,122.32x = 18,120.12 × 11,252.43
  4. Step 4: Simplify right side
    13,122.32x = 203,895,381.89
  5. Step 5: Solve for x
    x = 203,895,381.89/13,122.32
  6. Step 6: Final answer
    x = 15,538.06

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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.