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Finding the Fourth Proportional to 31,786.68, 47,686.20 and 9,601.80

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Solution

The fourth proportional to 31,786.68, 47,686.20 and 9,601.80 is: 14,404.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,786.68 : 47,686.20 = 9,601.80 : x
  2. Step 2: Convert to fraction form
    31,786.68/47,686.20 = 9,601.80/x
  3. Step 3: Cross multiply
    31,786.68x = 47,686.20 × 9,601.80
  4. Step 4: Simplify right side
    31,786.68x = 457,873,355.16
  5. Step 5: Solve for x
    x = 457,873,355.16/31,786.68
  6. Step 6: Final answer
    x = 14,404.57

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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.