Home / 13,171.55-19,767.70-5,781.11

Finding the Fourth Proportional to 13,171.55, 19,767.70 and 5,781.11

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Solution

The fourth proportional to 13,171.55, 19,767.70 and 5,781.11 is: 8,676.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.55 : 19,767.70 = 5,781.11 : x
  2. Step 2: Convert to fraction form
    13,171.55/19,767.70 = 5,781.11/x
  3. Step 3: Cross multiply
    13,171.55x = 19,767.70 × 5,781.11
  4. Step 4: Simplify right side
    13,171.55x = 114,279,120.40
  5. Step 5: Solve for x
    x = 114,279,120.40/13,171.55
  6. Step 6: Final answer
    x = 8,676.21

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1.5x scale

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.