Home / 21,759.28-32,634.60-10,661.20

Finding the Fourth Proportional to 21,759.28, 32,634.60 and 10,661.20

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Solution

The fourth proportional to 21,759.28, 32,634.60 and 10,661.20 is: 15,989.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,759.28 : 32,634.60 = 10,661.20 : x
  2. Step 2: Convert to fraction form
    21,759.28/32,634.60 = 10,661.20/x
  3. Step 3: Cross multiply
    21,759.28x = 32,634.60 × 10,661.20
  4. Step 4: Simplify right side
    21,759.28x = 347,923,997.52
  5. Step 5: Solve for x
    x = 347,923,997.52/21,759.28
  6. Step 6: Final answer
    x = 15,989.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.