Home / 31,190.72-46,790-12,212.92

Finding the Fourth Proportional to 31,190.72, 46,790 and 12,212.92

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Solution

The fourth proportional to 31,190.72, 46,790 and 12,212.92 is: 18,320.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,190.72 : 46,790 = 12,212.92 : x
  2. Step 2: Convert to fraction form
    31,190.72/46,790 = 12,212.92/x
  3. Step 3: Cross multiply
    31,190.72x = 46,790 × 12,212.92
  4. Step 4: Simplify right side
    31,190.72x = 571,442,526.80
  5. Step 5: Solve for x
    x = 571,442,526.80/31,190.72
  6. Step 6: Final answer
    x = 18,320.91

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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.