Home / 25,378.72-38,072.72-7,847.36

Finding the Fourth Proportional to 25,378.72, 38,072.72 and 7,847.36

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Solution

The fourth proportional to 25,378.72, 38,072.72 and 7,847.36 is: 11,772.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,378.72 : 38,072.72 = 7,847.36 : x
  2. Step 2: Convert to fraction form
    25,378.72/38,072.72 = 7,847.36/x
  3. Step 3: Cross multiply
    25,378.72x = 38,072.72 × 7,847.36
  4. Step 4: Simplify right side
    25,378.72x = 298,770,340.02
  5. Step 5: Solve for x
    x = 298,770,340.02/25,378.72
  6. Step 6: Final answer
    x = 11,772.47

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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.