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Finding the Fourth Proportional to 18,161.78, 25,066.35 and 10,608.99

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Solution

The fourth proportional to 18,161.78, 25,066.35 and 10,608.99 is: 14,642.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,161.78 : 25,066.35 = 10,608.99 : x
  2. Step 2: Convert to fraction form
    18,161.78/25,066.35 = 10,608.99/x
  3. Step 3: Cross multiply
    18,161.78x = 25,066.35 × 10,608.99
  4. Step 4: Simplify right side
    18,161.78x = 265,928,656.49
  5. Step 5: Solve for x
    x = 265,928,656.49/18,161.78
  6. Step 6: Final answer
    x = 14,642.22

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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.