Home / 21,279.88-29,364.42-11,849.32

Finding the Fourth Proportional to 21,279.88, 29,364.42 and 11,849.32

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Solution

The fourth proportional to 21,279.88, 29,364.42 and 11,849.32 is: 16,351.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.88 : 29,364.42 = 11,849.32 : x
  2. Step 2: Convert to fraction form
    21,279.88/29,364.42 = 11,849.32/x
  3. Step 3: Cross multiply
    21,279.88x = 29,364.42 × 11,849.32
  4. Step 4: Simplify right side
    21,279.88x = 347,948,409.19
  5. Step 5: Solve for x
    x = 347,948,409.19/21,279.88
  6. Step 6: Final answer
    x = 16,351.05

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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.