Home / 13,760.89-18,992.13-11,100.04

Finding the Fourth Proportional to 13,760.89, 18,992.13 and 11,100.04

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Solution

The fourth proportional to 13,760.89, 18,992.13 and 11,100.04 is: 15,319.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.89 : 18,992.13 = 11,100.04 : x
  2. Step 2: Convert to fraction form
    13,760.89/18,992.13 = 11,100.04/x
  3. Step 3: Cross multiply
    13,760.89x = 18,992.13 × 11,100.04
  4. Step 4: Simplify right side
    13,760.89x = 210,813,402.69
  5. Step 5: Solve for x
    x = 210,813,402.69/13,760.89
  6. Step 6: Final answer
    x = 15,319.75

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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.