Home / 28,718.87-39,633.86-16,144.43

Finding the Fourth Proportional to 28,718.87, 39,633.86 and 16,144.43

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Solution

The fourth proportional to 28,718.87, 39,633.86 and 16,144.43 is: 22,280.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.87 : 39,633.86 = 16,144.43 : x
  2. Step 2: Convert to fraction form
    28,718.87/39,633.86 = 16,144.43/x
  3. Step 3: Cross multiply
    28,718.87x = 39,633.86 × 16,144.43
  4. Step 4: Simplify right side
    28,718.87x = 639,865,997.68
  5. Step 5: Solve for x
    x = 639,865,997.68/28,718.87
  6. Step 6: Final answer
    x = 22,280.33

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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.