Home / 21,156.86-29,195.46-12,207.24

Finding the Fourth Proportional to 21,156.86, 29,195.46 and 12,207.24

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Solution

The fourth proportional to 21,156.86, 29,195.46 and 12,207.24 is: 16,845.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.86 : 29,195.46 = 12,207.24 : x
  2. Step 2: Convert to fraction form
    21,156.86/29,195.46 = 12,207.24/x
  3. Step 3: Cross multiply
    21,156.86x = 29,195.46 × 12,207.24
  4. Step 4: Simplify right side
    21,156.86x = 356,395,987.13
  5. Step 5: Solve for x
    x = 356,395,987.13/21,156.86
  6. Step 6: Final answer
    x = 16,845.41

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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.