Home / 21,008.01-28,991.18-11,576.58

Finding the Fourth Proportional to 21,008.01, 28,991.18 and 11,576.58

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Solution

The fourth proportional to 21,008.01, 28,991.18 and 11,576.58 is: 15,975.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.01 : 28,991.18 = 11,576.58 : x
  2. Step 2: Convert to fraction form
    21,008.01/28,991.18 = 11,576.58/x
  3. Step 3: Cross multiply
    21,008.01x = 28,991.18 × 11,576.58
  4. Step 4: Simplify right side
    21,008.01x = 335,618,714.56
  5. Step 5: Solve for x
    x = 335,618,714.56/21,008.01
  6. Step 6: Final answer
    x = 15,975.75

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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.