Home / 21,149.56-29,186.36-12,196.92

Finding the Fourth Proportional to 21,149.56, 29,186.36 and 12,196.92

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Solution

The fourth proportional to 21,149.56, 29,186.36 and 12,196.92 is: 16,831.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.56 : 29,186.36 = 12,196.92 : x
  2. Step 2: Convert to fraction form
    21,149.56/29,186.36 = 12,196.92/x
  3. Step 3: Cross multiply
    21,149.56x = 29,186.36 × 12,196.92
  4. Step 4: Simplify right side
    21,149.56x = 355,983,698.01
  5. Step 5: Solve for x
    x = 355,983,698.01/21,149.56
  6. Step 6: Final answer
    x = 16,831.73

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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.