Home / 11,961.40-17,945.95-3,643.02

Finding the Fourth Proportional to 11,961.40, 17,945.95 and 3,643.02

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Solution

The fourth proportional to 11,961.40, 17,945.95 and 3,643.02 is: 5,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.40 : 17,945.95 = 3,643.02 : x
  2. Step 2: Convert to fraction form
    11,961.40/17,945.95 = 3,643.02/x
  3. Step 3: Cross multiply
    11,961.40x = 17,945.95 × 3,643.02
  4. Step 4: Simplify right side
    11,961.40x = 65,377,445.66
  5. Step 5: Solve for x
    x = 65,377,445.66/11,961.40
  6. Step 6: Final answer
    x = 5,465.70

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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.