Home / 21,081.34-29,090.50-11,649.88

Finding the Fourth Proportional to 21,081.34, 29,090.50 and 11,649.88

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Solution

The fourth proportional to 21,081.34, 29,090.50 and 11,649.88 is: 16,075.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.34 : 29,090.50 = 11,649.88 : x
  2. Step 2: Convert to fraction form
    21,081.34/29,090.50 = 11,649.88/x
  3. Step 3: Cross multiply
    21,081.34x = 29,090.50 × 11,649.88
  4. Step 4: Simplify right side
    21,081.34x = 338,900,834.14
  5. Step 5: Solve for x
    x = 338,900,834.14/21,081.34
  6. Step 6: Final answer
    x = 16,075.87

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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.