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Finding the Fourth Proportional to 18,919.32, 26,110.80 and 12,202.26

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Solution

The fourth proportional to 18,919.32, 26,110.80 and 12,202.26 is: 16,840.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.32 : 26,110.80 = 12,202.26 : x
  2. Step 2: Convert to fraction form
    18,919.32/26,110.80 = 12,202.26/x
  3. Step 3: Cross multiply
    18,919.32x = 26,110.80 × 12,202.26
  4. Step 4: Simplify right side
    18,919.32x = 318,610,770.41
  5. Step 5: Solve for x
    x = 318,610,770.41/18,919.32
  6. Step 6: Final answer
    x = 16,840.50

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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.