Home / 15,727.68-21,704.58-8,557.99

Finding the Fourth Proportional to 15,727.68, 21,704.58 and 8,557.99

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Solution

The fourth proportional to 15,727.68, 21,704.58 and 8,557.99 is: 11,810.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,727.68 : 21,704.58 = 8,557.99 : x
  2. Step 2: Convert to fraction form
    15,727.68/21,704.58 = 8,557.99/x
  3. Step 3: Cross multiply
    15,727.68x = 21,704.58 × 8,557.99
  4. Step 4: Simplify right side
    15,727.68x = 185,747,524.33
  5. Step 5: Solve for x
    x = 185,747,524.33/15,727.68
  6. Step 6: Final answer
    x = 11,810.23

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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.