Home / 31,409.62-47,095.97-12,690.25

Finding the Fourth Proportional to 31,409.62, 47,095.97 and 12,690.25

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Solution

The fourth proportional to 31,409.62, 47,095.97 and 12,690.25 is: 19,027.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,409.62 : 47,095.97 = 12,690.25 : x
  2. Step 2: Convert to fraction form
    31,409.62/47,095.97 = 12,690.25/x
  3. Step 3: Cross multiply
    31,409.62x = 47,095.97 × 12,690.25
  4. Step 4: Simplify right side
    31,409.62x = 597,659,633.29
  5. Step 5: Solve for x
    x = 597,659,633.29/31,409.62
  6. Step 6: Final answer
    x = 19,027.92

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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.