Home / 13,164.53-19,742.80-6,921.17

Finding the Fourth Proportional to 13,164.53, 19,742.80 and 6,921.17

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Solution

The fourth proportional to 13,164.53, 19,742.80 and 6,921.17 is: 10,379.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.53 : 19,742.80 = 6,921.17 : x
  2. Step 2: Convert to fraction form
    13,164.53/19,742.80 = 6,921.17/x
  3. Step 3: Cross multiply
    13,164.53x = 19,742.80 × 6,921.17
  4. Step 4: Simplify right side
    13,164.53x = 136,643,311.33
  5. Step 5: Solve for x
    x = 136,643,311.33/13,164.53
  6. Step 6: Final answer
    x = 10,379.66

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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.