Home / 21,204.87-29,265.05-12,131.07

Finding the Fourth Proportional to 21,204.87, 29,265.05 and 12,131.07

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Solution

The fourth proportional to 21,204.87, 29,265.05 and 12,131.07 is: 16,742.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.87 : 29,265.05 = 12,131.07 : x
  2. Step 2: Convert to fraction form
    21,204.87/29,265.05 = 12,131.07/x
  3. Step 3: Cross multiply
    21,204.87x = 29,265.05 × 12,131.07
  4. Step 4: Simplify right side
    21,204.87x = 355,016,309.45
  5. Step 5: Solve for x
    x = 355,016,309.45/21,204.87
  6. Step 6: Final answer
    x = 16,742.21

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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.