Home / 21,145.98-29,180.19-11,713.86

Finding the Fourth Proportional to 21,145.98, 29,180.19 and 11,713.86

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Solution

The fourth proportional to 21,145.98, 29,180.19 and 11,713.86 is: 16,164.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.98 : 29,180.19 = 11,713.86 : x
  2. Step 2: Convert to fraction form
    21,145.98/29,180.19 = 11,713.86/x
  3. Step 3: Cross multiply
    21,145.98x = 29,180.19 × 11,713.86
  4. Step 4: Simplify right side
    21,145.98x = 341,812,660.43
  5. Step 5: Solve for x
    x = 341,812,660.43/21,145.98
  6. Step 6: Final answer
    x = 16,164.43

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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.