Home / 21,261.80-29,344.88-12,314.75

Finding the Fourth Proportional to 21,261.80, 29,344.88 and 12,314.75

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Solution

The fourth proportional to 21,261.80, 29,344.88 and 12,314.75 is: 16,996.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.80 : 29,344.88 = 12,314.75 : x
  2. Step 2: Convert to fraction form
    21,261.80/29,344.88 = 12,314.75/x
  3. Step 3: Cross multiply
    21,261.80x = 29,344.88 × 12,314.75
  4. Step 4: Simplify right side
    21,261.80x = 361,374,652.68
  5. Step 5: Solve for x
    x = 361,374,652.68/21,261.80
  6. Step 6: Final answer
    x = 16,996.43

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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.