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Finding the Fourth Proportional to 18,906.60, 26,094.18 and 11,458.28

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Solution

The fourth proportional to 18,906.60, 26,094.18 and 11,458.28 is: 15,814.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906.60 : 26,094.18 = 11,458.28 : x
  2. Step 2: Convert to fraction form
    18,906.60/26,094.18 = 11,458.28/x
  3. Step 3: Cross multiply
    18,906.60x = 26,094.18 × 11,458.28
  4. Step 4: Simplify right side
    18,906.60x = 298,994,420.81
  5. Step 5: Solve for x
    x = 298,994,420.81/18,906.60
  6. Step 6: Final answer
    x = 15,814.29

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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.