Home / 31,399.53-47,105.81-9,213.63

Finding the Fourth Proportional to 31,399.53, 47,105.81 and 9,213.63

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Solution

The fourth proportional to 31,399.53, 47,105.81 and 9,213.63 is: 13,822.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,399.53 : 47,105.81 = 9,213.63 : x
  2. Step 2: Convert to fraction form
    31,399.53/47,105.81 = 9,213.63/x
  3. Step 3: Cross multiply
    31,399.53x = 47,105.81 × 9,213.63
  4. Step 4: Simplify right side
    31,399.53x = 434,015,458.12
  5. Step 5: Solve for x
    x = 434,015,458.12/31,399.53
  6. Step 6: Final answer
    x = 13,822.36

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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.