Home / 21,711.14-29,961.36-11,775.14

Finding the Fourth Proportional to 21,711.14, 29,961.36 and 11,775.14

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Solution

The fourth proportional to 21,711.14, 29,961.36 and 11,775.14 is: 16,249.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,711.14 : 29,961.36 = 11,775.14 : x
  2. Step 2: Convert to fraction form
    21,711.14/29,961.36 = 11,775.14/x
  3. Step 3: Cross multiply
    21,711.14x = 29,961.36 × 11,775.14
  4. Step 4: Simplify right side
    21,711.14x = 352,799,088.22
  5. Step 5: Solve for x
    x = 352,799,088.22/21,711.14
  6. Step 6: Final answer
    x = 16,249.68

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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.