Home / 25,499.40-38,216.52-20,571.36

Finding the Fourth Proportional to 25,499.40, 38,216.52 and 20,571.36

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Solution

The fourth proportional to 25,499.40, 38,216.52 and 20,571.36 is: 30,830.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,499.40 : 38,216.52 = 20,571.36 : x
  2. Step 2: Convert to fraction form
    25,499.40/38,216.52 = 20,571.36/x
  3. Step 3: Cross multiply
    25,499.40x = 38,216.52 × 20,571.36
  4. Step 4: Simplify right side
    25,499.40x = 786,165,790.87
  5. Step 5: Solve for x
    x = 786,165,790.87/25,499.40
  6. Step 6: Final answer
    x = 30,830.76

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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.