Home / 13,187.32-19,781.04-8,773.22

Finding the Fourth Proportional to 13,187.32, 19,781.04 and 8,773.22

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Solution

The fourth proportional to 13,187.32, 19,781.04 and 8,773.22 is: 13,159.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.32 : 19,781.04 = 8,773.22 : x
  2. Step 2: Convert to fraction form
    13,187.32/19,781.04 = 8,773.22/x
  3. Step 3: Cross multiply
    13,187.32x = 19,781.04 × 8,773.22
  4. Step 4: Simplify right side
    13,187.32x = 173,543,415.75
  5. Step 5: Solve for x
    x = 173,543,415.75/13,187.32
  6. Step 6: Final answer
    x = 13,159.87

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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.