Home / 22,187.78-30,620.39-12,117.16

Finding the Fourth Proportional to 22,187.78, 30,620.39 and 12,117.16

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Solution

The fourth proportional to 22,187.78, 30,620.39 and 12,117.16 is: 16,722.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,187.78 : 30,620.39 = 12,117.16 : x
  2. Step 2: Convert to fraction form
    22,187.78/30,620.39 = 12,117.16/x
  3. Step 3: Cross multiply
    22,187.78x = 30,620.39 × 12,117.16
  4. Step 4: Simplify right side
    22,187.78x = 371,032,027.76
  5. Step 5: Solve for x
    x = 371,032,027.76/22,187.78
  6. Step 6: Final answer
    x = 16,722.36

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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.