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Finding the Fourth Proportional to 25,892.58, 38,839.73 and 7,172.81

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Solution

The fourth proportional to 25,892.58, 38,839.73 and 7,172.81 is: 10,759.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,892.58 : 38,839.73 = 7,172.81 : x
  2. Step 2: Convert to fraction form
    25,892.58/38,839.73 = 7,172.81/x
  3. Step 3: Cross multiply
    25,892.58x = 38,839.73 × 7,172.81
  4. Step 4: Simplify right side
    25,892.58x = 278,589,809.54
  5. Step 5: Solve for x
    x = 278,589,809.54/25,892.58
  6. Step 6: Final answer
    x = 10,759.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.