Home / 22,188.45-30,620.19-12,116.94

Finding the Fourth Proportional to 22,188.45, 30,620.19 and 12,116.94

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Solution

The fourth proportional to 22,188.45, 30,620.19 and 12,116.94 is: 16,721.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.45 : 30,620.19 = 12,116.94 : x
  2. Step 2: Convert to fraction form
    22,188.45/30,620.19 = 12,116.94/x
  3. Step 3: Cross multiply
    22,188.45x = 30,620.19 × 12,116.94
  4. Step 4: Simplify right side
    22,188.45x = 371,023,005.02
  5. Step 5: Solve for x
    x = 371,023,005.02/22,188.45
  6. Step 6: Final answer
    x = 16,721.45

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Half scale
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Double 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.