Home / 28,318.74-39,078.45-16,383.18

Finding the Fourth Proportional to 28,318.74, 39,078.45 and 16,383.18

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Solution

The fourth proportional to 28,318.74, 39,078.45 and 16,383.18 is: 22,607.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.74 : 39,078.45 = 16,383.18 : x
  2. Step 2: Convert to fraction form
    28,318.74/39,078.45 = 16,383.18/x
  3. Step 3: Cross multiply
    28,318.74x = 39,078.45 × 16,383.18
  4. Step 4: Simplify right side
    28,318.74x = 640,229,280.47
  5. Step 5: Solve for x
    x = 640,229,280.47/28,318.74
  6. Step 6: Final answer
    x = 22,607.97

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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.