Home / 13,185.76-19,781.32-5,395.20

Finding the Fourth Proportional to 13,185.76, 19,781.32 and 5,395.20

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Solution

The fourth proportional to 13,185.76, 19,781.32 and 5,395.20 is: 8,093.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.76 : 19,781.32 = 5,395.20 : x
  2. Step 2: Convert to fraction form
    13,185.76/19,781.32 = 5,395.20/x
  3. Step 3: Cross multiply
    13,185.76x = 19,781.32 × 5,395.20
  4. Step 4: Simplify right side
    13,185.76x = 106,724,177.66
  5. Step 5: Solve for x
    x = 106,724,177.66/13,185.76
  6. Step 6: Final answer
    x = 8,093.90

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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.