Home / 21,269.88-29,353.86-11,838.48

Finding the Fourth Proportional to 21,269.88, 29,353.86 and 11,838.48

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Solution

The fourth proportional to 21,269.88, 29,353.86 and 11,838.48 is: 16,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.88 : 29,353.86 = 11,838.48 : x
  2. Step 2: Convert to fraction form
    21,269.88/29,353.86 = 11,838.48/x
  3. Step 3: Cross multiply
    21,269.88x = 29,353.86 × 11,838.48
  4. Step 4: Simplify right side
    21,269.88x = 347,505,084.53
  5. Step 5: Solve for x
    x = 347,505,084.53/21,269.88
  6. Step 6: Final answer
    x = 16,337.90

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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.