Home / 21,279.39-29,361.33-11,846.13

Finding the Fourth Proportional to 21,279.39, 29,361.33 and 11,846.13

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Solution

The fourth proportional to 21,279.39, 29,361.33 and 11,846.13 is: 16,345.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.39 : 29,361.33 = 11,846.13 : x
  2. Step 2: Convert to fraction form
    21,279.39/29,361.33 = 11,846.13/x
  3. Step 3: Cross multiply
    21,279.39x = 29,361.33 × 11,846.13
  4. Step 4: Simplify right side
    21,279.39x = 347,818,132.15
  5. Step 5: Solve for x
    x = 347,818,132.15/21,279.39
  6. Step 6: Final answer
    x = 16,345.31

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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.