Home / 21,132.74-29,163.84-11,702.18

Finding the Fourth Proportional to 21,132.74, 29,163.84 and 11,702.18

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Solution

The fourth proportional to 21,132.74, 29,163.84 and 11,702.18 is: 16,149.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.74 : 29,163.84 = 11,702.18 : x
  2. Step 2: Convert to fraction form
    21,132.74/29,163.84 = 11,702.18/x
  3. Step 3: Cross multiply
    21,132.74x = 29,163.84 × 11,702.18
  4. Step 4: Simplify right side
    21,132.74x = 341,280,505.17
  5. Step 5: Solve for x
    x = 341,280,505.17/21,132.74
  6. Step 6: Final answer
    x = 16,149.37

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1.5x scale

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.