Home / 21,560.82-29,756.67-12,131.19

Finding the Fourth Proportional to 21,560.82, 29,756.67 and 12,131.19

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Solution

The fourth proportional to 21,560.82, 29,756.67 and 12,131.19 is: 16,742.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,560.82 : 29,756.67 = 12,131.19 : x
  2. Step 2: Convert to fraction form
    21,560.82/29,756.67 = 12,131.19/x
  3. Step 3: Cross multiply
    21,560.82x = 29,756.67 × 12,131.19
  4. Step 4: Simplify right side
    21,560.82x = 360,983,817.54
  5. Step 5: Solve for x
    x = 360,983,817.54/21,560.82
  6. Step 6: Final answer
    x = 16,742.58

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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.