Home / 22,209.39-30,640.19-12,772.89

Finding the Fourth Proportional to 22,209.39, 30,640.19 and 12,772.89

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Solution

The fourth proportional to 22,209.39, 30,640.19 and 12,772.89 is: 17,621.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,209.39 : 30,640.19 = 12,772.89 : x
  2. Step 2: Convert to fraction form
    22,209.39/30,640.19 = 12,772.89/x
  3. Step 3: Cross multiply
    22,209.39x = 30,640.19 × 12,772.89
  4. Step 4: Simplify right side
    22,209.39x = 391,363,712.58
  5. Step 5: Solve for x
    x = 391,363,712.58/22,209.39
  6. Step 6: Final answer
    x = 17,621.54

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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.