Home / 21,015.58-29,001.64-11,584.15

Finding the Fourth Proportional to 21,015.58, 29,001.64 and 11,584.15

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Solution

The fourth proportional to 21,015.58, 29,001.64 and 11,584.15 is: 15,986.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.58 : 29,001.64 = 11,584.15 : x
  2. Step 2: Convert to fraction form
    21,015.58/29,001.64 = 11,584.15/x
  3. Step 3: Cross multiply
    21,015.58x = 29,001.64 × 11,584.15
  4. Step 4: Simplify right side
    21,015.58x = 335,959,348.01
  5. Step 5: Solve for x
    x = 335,959,348.01/21,015.58
  6. Step 6: Final answer
    x = 15,986.20

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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.