Home / 31,686.21-47,529.26-12,974.97

Finding the Fourth Proportional to 31,686.21, 47,529.26 and 12,974.97

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Solution

The fourth proportional to 31,686.21, 47,529.26 and 12,974.97 is: 19,462.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,686.21 : 47,529.26 = 12,974.97 : x
  2. Step 2: Convert to fraction form
    31,686.21/47,529.26 = 12,974.97/x
  3. Step 3: Cross multiply
    31,686.21x = 47,529.26 × 12,974.97
  4. Step 4: Simplify right side
    31,686.21x = 616,690,657.75
  5. Step 5: Solve for x
    x = 616,690,657.75/31,686.21
  6. Step 6: Final answer
    x = 19,462.43

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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.