Home / 21,316.09-29,415.13-11,882.83

Finding the Fourth Proportional to 21,316.09, 29,415.13 and 11,882.83

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Solution

The fourth proportional to 21,316.09, 29,415.13 and 11,882.83 is: 16,397.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.09 : 29,415.13 = 11,882.83 : x
  2. Step 2: Convert to fraction form
    21,316.09/29,415.13 = 11,882.83/x
  3. Step 3: Cross multiply
    21,316.09x = 29,415.13 × 11,882.83
  4. Step 4: Simplify right side
    21,316.09x = 349,534,989.22
  5. Step 5: Solve for x
    x = 349,534,989.22/21,316.09
  6. Step 6: Final answer
    x = 16,397.71

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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.