Home / 21,198.83-31,829.46-11,857.16

Finding the Fourth Proportional to 21,198.83, 31,829.46 and 11,857.16

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Solution

The fourth proportional to 21,198.83, 31,829.46 and 11,857.16 is: 17,803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.83 : 31,829.46 = 11,857.16 : x
  2. Step 2: Convert to fraction form
    21,198.83/31,829.46 = 11,857.16/x
  3. Step 3: Cross multiply
    21,198.83x = 31,829.46 × 11,857.16
  4. Step 4: Simplify right side
    21,198.83x = 377,406,840.79
  5. Step 5: Solve for x
    x = 377,406,840.79/21,198.83
  6. Step 6: Final answer
    x = 17,803.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.