Home / 13,105.74-19,642.20-9,415.11

Finding the Fourth Proportional to 13,105.74, 19,642.20 and 9,415.11

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Solution

The fourth proportional to 13,105.74, 19,642.20 and 9,415.11 is: 14,110.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105.74 : 19,642.20 = 9,415.11 : x
  2. Step 2: Convert to fraction form
    13,105.74/19,642.20 = 9,415.11/x
  3. Step 3: Cross multiply
    13,105.74x = 19,642.20 × 9,415.11
  4. Step 4: Simplify right side
    13,105.74x = 184,933,473.64
  5. Step 5: Solve for x
    x = 184,933,473.64/13,105.74
  6. Step 6: Final answer
    x = 14,110.88

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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.