Home / 21,186.97-29,237.90-12,235.25

Finding the Fourth Proportional to 21,186.97, 29,237.90 and 12,235.25

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Solution

The fourth proportional to 21,186.97, 29,237.90 and 12,235.25 is: 16,884.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.97 : 29,237.90 = 12,235.25 : x
  2. Step 2: Convert to fraction form
    21,186.97/29,237.90 = 12,235.25/x
  3. Step 3: Cross multiply
    21,186.97x = 29,237.90 × 12,235.25
  4. Step 4: Simplify right side
    21,186.97x = 357,733,027.89
  5. Step 5: Solve for x
    x = 357,733,027.89/21,186.97
  6. Step 6: Final answer
    x = 16,884.58

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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.