Home / 21,015.12-29,000.52-11,584.56

Finding the Fourth Proportional to 21,015.12, 29,000.52 and 11,584.56

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Solution

The fourth proportional to 21,015.12, 29,000.52 and 11,584.56 is: 15,986.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.12 : 29,000.52 = 11,584.56 : x
  2. Step 2: Convert to fraction form
    21,015.12/29,000.52 = 11,584.56/x
  3. Step 3: Cross multiply
    21,015.12x = 29,000.52 × 11,584.56
  4. Step 4: Simplify right side
    21,015.12x = 335,958,263.97
  5. Step 5: Solve for x
    x = 335,958,263.97/21,015.12
  6. Step 6: Final answer
    x = 15,986.50

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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.