Home / 31,420.78-47,131.79-25,151.69

Finding the Fourth Proportional to 31,420.78, 47,131.79 and 25,151.69

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Solution

The fourth proportional to 31,420.78, 47,131.79 and 25,151.69 is: 37,728.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,420.78 : 47,131.79 = 25,151.69 : x
  2. Step 2: Convert to fraction form
    31,420.78/47,131.79 = 25,151.69/x
  3. Step 3: Cross multiply
    31,420.78x = 47,131.79 × 25,151.69
  4. Step 4: Simplify right side
    31,420.78x = 1,185,444,163.30
  5. Step 5: Solve for x
    x = 1,185,444,163.30/31,420.78
  6. Step 6: Final answer
    x = 37,728.03

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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.