Home / 21,195.68-29,243.28-12,242

Finding the Fourth Proportional to 21,195.68, 29,243.28 and 12,242

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Solution

The fourth proportional to 21,195.68, 29,243.28 and 12,242 is: 16,890.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.68 : 29,243.28 = 12,242 : x
  2. Step 2: Convert to fraction form
    21,195.68/29,243.28 = 12,242/x
  3. Step 3: Cross multiply
    21,195.68x = 29,243.28 × 12,242
  4. Step 4: Simplify right side
    21,195.68x = 357,996,233.76
  5. Step 5: Solve for x
    x = 357,996,233.76/21,195.68
  6. Step 6: Final answer
    x = 16,890.06

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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.