Home / 21,081.67-29,091.56-11,649.63

Finding the Fourth Proportional to 21,081.67, 29,091.56 and 11,649.63

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Solution

The fourth proportional to 21,081.67, 29,091.56 and 11,649.63 is: 16,075.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.67 : 29,091.56 = 11,649.63 : x
  2. Step 2: Convert to fraction form
    21,081.67/29,091.56 = 11,649.63/x
  3. Step 3: Cross multiply
    21,081.67x = 29,091.56 × 11,649.63
  4. Step 4: Simplify right side
    21,081.67x = 338,905,910.12
  5. Step 5: Solve for x
    x = 338,905,910.12/21,081.67
  6. Step 6: Final answer
    x = 16,075.86

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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.