Home / 31,479.98-47,235.78-19,630.68

Finding the Fourth Proportional to 31,479.98, 47,235.78 and 19,630.68

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Solution

The fourth proportional to 31,479.98, 47,235.78 and 19,630.68 is: 29,455.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,479.98 : 47,235.78 = 19,630.68 : x
  2. Step 2: Convert to fraction form
    31,479.98/47,235.78 = 19,630.68/x
  3. Step 3: Cross multiply
    31,479.98x = 47,235.78 × 19,630.68
  4. Step 4: Simplify right side
    31,479.98x = 927,270,481.73
  5. Step 5: Solve for x
    x = 927,270,481.73/31,479.98
  6. Step 6: Final answer
    x = 29,455.88

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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.