Home / 21,241.96-29,309.70-12,859.24

Finding the Fourth Proportional to 21,241.96, 29,309.70 and 12,859.24

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Solution

The fourth proportional to 21,241.96, 29,309.70 and 12,859.24 is: 17,743.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.96 : 29,309.70 = 12,859.24 : x
  2. Step 2: Convert to fraction form
    21,241.96/29,309.70 = 12,859.24/x
  3. Step 3: Cross multiply
    21,241.96x = 29,309.70 × 12,859.24
  4. Step 4: Simplify right side
    21,241.96x = 376,900,466.63
  5. Step 5: Solve for x
    x = 376,900,466.63/21,241.96
  6. Step 6: Final answer
    x = 17,743.21

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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.