Home / 31,288.74-43,179.09-19,351.86

Finding the Fourth Proportional to 31,288.74, 43,179.09 and 19,351.86

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Solution

The fourth proportional to 31,288.74, 43,179.09 and 19,351.86 is: 26,705.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,288.74 : 43,179.09 = 19,351.86 : x
  2. Step 2: Convert to fraction form
    31,288.74/43,179.09 = 19,351.86/x
  3. Step 3: Cross multiply
    31,288.74x = 43,179.09 × 19,351.86
  4. Step 4: Simplify right side
    31,288.74x = 835,595,704.61
  5. Step 5: Solve for x
    x = 835,595,704.61/31,288.74
  6. Step 6: Final answer
    x = 26,705.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.