Home / 31,415.31-47,129.91-10,361.85

Finding the Fourth Proportional to 31,415.31, 47,129.91 and 10,361.85

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Solution

The fourth proportional to 31,415.31, 47,129.91 and 10,361.85 is: 15,545.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,415.31 : 47,129.91 = 10,361.85 : x
  2. Step 2: Convert to fraction form
    31,415.31/47,129.91 = 10,361.85/x
  3. Step 3: Cross multiply
    31,415.31x = 47,129.91 × 10,361.85
  4. Step 4: Simplify right side
    31,415.31x = 488,353,057.93
  5. Step 5: Solve for x
    x = 488,353,057.93/31,415.31
  6. Step 6: Final answer
    x = 15,545.07

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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.