Home / 21,214.85-29,268.54-13,144.82

Finding the Fourth Proportional to 21,214.85, 29,268.54 and 13,144.82

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Solution

The fourth proportional to 21,214.85, 29,268.54 and 13,144.82 is: 18,134.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.85 : 29,268.54 = 13,144.82 : x
  2. Step 2: Convert to fraction form
    21,214.85/29,268.54 = 13,144.82/x
  3. Step 3: Cross multiply
    21,214.85x = 29,268.54 × 13,144.82
  4. Step 4: Simplify right side
    21,214.85x = 384,729,543.62
  5. Step 5: Solve for x
    x = 384,729,543.62/21,214.85
  6. Step 6: Final answer
    x = 18,134.92

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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.