Home / 25,356.78-38,039.61-8,718.54

Finding the Fourth Proportional to 25,356.78, 38,039.61 and 8,718.54

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Solution

The fourth proportional to 25,356.78, 38,039.61 and 8,718.54 is: 13,079.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,356.78 : 38,039.61 = 8,718.54 : x
  2. Step 2: Convert to fraction form
    25,356.78/38,039.61 = 8,718.54/x
  3. Step 3: Cross multiply
    25,356.78x = 38,039.61 × 8,718.54
  4. Step 4: Simplify right side
    25,356.78x = 331,649,861.37
  5. Step 5: Solve for x
    x = 331,649,861.37/25,356.78
  6. Step 6: Final answer
    x = 13,079.34

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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.