Home / 31,438.79-47,161.26-11,453.71

Finding the Fourth Proportional to 31,438.79, 47,161.26 and 11,453.71

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Solution

The fourth proportional to 31,438.79, 47,161.26 and 11,453.71 is: 17,181.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,438.79 : 47,161.26 = 11,453.71 : x
  2. Step 2: Convert to fraction form
    31,438.79/47,161.26 = 11,453.71/x
  3. Step 3: Cross multiply
    31,438.79x = 47,161.26 × 11,453.71
  4. Step 4: Simplify right side
    31,438.79x = 540,171,395.27
  5. Step 5: Solve for x
    x = 540,171,395.27/31,438.79
  6. Step 6: Final answer
    x = 17,181.69

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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.