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Finding the Fourth Proportional to 22,123.64, 30,530.60 and 12,187.64

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Solution

The fourth proportional to 22,123.64, 30,530.60 and 12,187.64 is: 16,818.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,123.64 : 30,530.60 = 12,187.64 : x
  2. Step 2: Convert to fraction form
    22,123.64/30,530.60 = 12,187.64/x
  3. Step 3: Cross multiply
    22,123.64x = 30,530.60 × 12,187.64
  4. Step 4: Simplify right side
    22,123.64x = 372,095,961.78
  5. Step 5: Solve for x
    x = 372,095,961.78/22,123.64
  6. Step 6: Final answer
    x = 16,818.93

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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.