Home / 28,321.60-39,080.78-16,382.71

Finding the Fourth Proportional to 28,321.60, 39,080.78 and 16,382.71

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Solution

The fourth proportional to 28,321.60, 39,080.78 and 16,382.71 is: 22,606.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.60 : 39,080.78 = 16,382.71 : x
  2. Step 2: Convert to fraction form
    28,321.60/39,080.78 = 16,382.71/x
  3. Step 3: Cross multiply
    28,321.60x = 39,080.78 × 16,382.71
  4. Step 4: Simplify right side
    28,321.60x = 640,248,893.86
  5. Step 5: Solve for x
    x = 640,248,893.86/28,321.60
  6. Step 6: Final answer
    x = 22,606.38

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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.