Home / 21,134.94-29,167.20-12,182.28

Finding the Fourth Proportional to 21,134.94, 29,167.20 and 12,182.28

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Solution

The fourth proportional to 21,134.94, 29,167.20 and 12,182.28 is: 16,812.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.94 : 29,167.20 = 12,182.28 : x
  2. Step 2: Convert to fraction form
    21,134.94/29,167.20 = 12,182.28/x
  3. Step 3: Cross multiply
    21,134.94x = 29,167.20 × 12,182.28
  4. Step 4: Simplify right side
    21,134.94x = 355,322,997.22
  5. Step 5: Solve for x
    x = 355,322,997.22/21,134.94
  6. Step 6: Final answer
    x = 16,812.11

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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.