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Finding the Fourth Proportional to 18,410.78, 25,406.93 and 10,027.28

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Solution

The fourth proportional to 18,410.78, 25,406.93 and 10,027.28 is: 13,837.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,410.78 : 25,406.93 = 10,027.28 : x
  2. Step 2: Convert to fraction form
    18,410.78/25,406.93 = 10,027.28/x
  3. Step 3: Cross multiply
    18,410.78x = 25,406.93 × 10,027.28
  4. Step 4: Simplify right side
    18,410.78x = 254,762,401.05
  5. Step 5: Solve for x
    x = 254,762,401.05/18,410.78
  6. Step 6: Final answer
    x = 13,837.68

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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.