Home / 28,325.97-39,086.78-16,387.08

Finding the Fourth Proportional to 28,325.97, 39,086.78 and 16,387.08

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Solution

The fourth proportional to 28,325.97, 39,086.78 and 16,387.08 is: 22,612.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,325.97 : 39,086.78 = 16,387.08 : x
  2. Step 2: Convert to fraction form
    28,325.97/39,086.78 = 16,387.08/x
  3. Step 3: Cross multiply
    28,325.97x = 39,086.78 × 16,387.08
  4. Step 4: Simplify right side
    28,325.97x = 640,518,035.58
  5. Step 5: Solve for x
    x = 640,518,035.58/28,325.97
  6. Step 6: Final answer
    x = 22,612.39

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Half scale
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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.