Home / 21,279.19-29,366.19-11,847.75

Finding the Fourth Proportional to 21,279.19, 29,366.19 and 11,847.75

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Solution

The fourth proportional to 21,279.19, 29,366.19 and 11,847.75 is: 16,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.19 : 29,366.19 = 11,847.75 : x
  2. Step 2: Convert to fraction form
    21,279.19/29,366.19 = 11,847.75/x
  3. Step 3: Cross multiply
    21,279.19x = 29,366.19 × 11,847.75
  4. Step 4: Simplify right side
    21,279.19x = 347,923,277.57
  5. Step 5: Solve for x
    x = 347,923,277.57/21,279.19
  6. Step 6: Final answer
    x = 16,350.40

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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.