Home / 21,080.70-29,091.11-11,649.06

Finding the Fourth Proportional to 21,080.70, 29,091.11 and 11,649.06

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Solution

The fourth proportional to 21,080.70, 29,091.11 and 11,649.06 is: 16,075.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.70 : 29,091.11 = 11,649.06 : x
  2. Step 2: Convert to fraction form
    21,080.70/29,091.11 = 11,649.06/x
  3. Step 3: Cross multiply
    21,080.70x = 29,091.11 × 11,649.06
  4. Step 4: Simplify right side
    21,080.70x = 338,884,085.86
  5. Step 5: Solve for x
    x = 338,884,085.86/21,080.70
  6. Step 6: Final answer
    x = 16,075.56

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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.