Home / 31,835.28-47,739.78-13,824.68

Finding the Fourth Proportional to 31,835.28, 47,739.78 and 13,824.68

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Solution

The fourth proportional to 31,835.28, 47,739.78 and 13,824.68 is: 20,731.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,835.28 : 47,739.78 = 13,824.68 : x
  2. Step 2: Convert to fraction form
    31,835.28/47,739.78 = 13,824.68/x
  3. Step 3: Cross multiply
    31,835.28x = 47,739.78 × 13,824.68
  4. Step 4: Simplify right side
    31,835.28x = 659,987,181.77
  5. Step 5: Solve for x
    x = 659,987,181.77/31,835.28
  6. Step 6: Final answer
    x = 20,731.31

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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.