Home / 31,385.82-47,078.66-19,707.24

Finding the Fourth Proportional to 31,385.82, 47,078.66 and 19,707.24

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Solution

The fourth proportional to 31,385.82, 47,078.66 and 19,707.24 is: 29,560.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,385.82 : 47,078.66 = 19,707.24 : x
  2. Step 2: Convert to fraction form
    31,385.82/47,078.66 = 19,707.24/x
  3. Step 3: Cross multiply
    31,385.82x = 47,078.66 × 19,707.24
  4. Step 4: Simplify right side
    31,385.82x = 927,790,451.50
  5. Step 5: Solve for x
    x = 927,790,451.50/31,385.82
  6. Step 6: Final answer
    x = 29,560.82

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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.