Home / 13,781.30-19,019.22-8,477.96

Finding the Fourth Proportional to 13,781.30, 19,019.22 and 8,477.96

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Solution

The fourth proportional to 13,781.30, 19,019.22 and 8,477.96 is: 11,700.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.30 : 19,019.22 = 8,477.96 : x
  2. Step 2: Convert to fraction form
    13,781.30/19,019.22 = 8,477.96/x
  3. Step 3: Cross multiply
    13,781.30x = 19,019.22 × 8,477.96
  4. Step 4: Simplify right side
    13,781.30x = 161,244,186.39
  5. Step 5: Solve for x
    x = 161,244,186.39/13,781.30
  6. Step 6: Final answer
    x = 11,700.22

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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.