Home / 21,241.96-29,314.89-12,287.72

Finding the Fourth Proportional to 21,241.96, 29,314.89 and 12,287.72

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Solution

The fourth proportional to 21,241.96, 29,314.89 and 12,287.72 is: 16,957.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.96 : 29,314.89 = 12,287.72 : x
  2. Step 2: Convert to fraction form
    21,241.96/29,314.89 = 12,287.72/x
  3. Step 3: Cross multiply
    21,241.96x = 29,314.89 × 12,287.72
  4. Step 4: Simplify right side
    21,241.96x = 360,213,233.44
  5. Step 5: Solve for x
    x = 360,213,233.44/21,241.96
  6. Step 6: Final answer
    x = 16,957.63

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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.