Home / 31,525.06-47,255.68-20,438.78

Finding the Fourth Proportional to 31,525.06, 47,255.68 and 20,438.78

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Solution

The fourth proportional to 31,525.06, 47,255.68 and 20,438.78 is: 30,637.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,525.06 : 47,255.68 = 20,438.78 : x
  2. Step 2: Convert to fraction form
    31,525.06/47,255.68 = 20,438.78/x
  3. Step 3: Cross multiply
    31,525.06x = 47,255.68 × 20,438.78
  4. Step 4: Simplify right side
    31,525.06x = 965,848,447.27
  5. Step 5: Solve for x
    x = 965,848,447.27/31,525.06
  6. Step 6: Final answer
    x = 30,637.48

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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.