Home / 31,596.09-47,366.36-12,891.87

Finding the Fourth Proportional to 31,596.09, 47,366.36 and 12,891.87

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Solution

The fourth proportional to 31,596.09, 47,366.36 and 12,891.87 is: 19,326.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,596.09 : 47,366.36 = 12,891.87 : x
  2. Step 2: Convert to fraction form
    31,596.09/47,366.36 = 12,891.87/x
  3. Step 3: Cross multiply
    31,596.09x = 47,366.36 × 12,891.87
  4. Step 4: Simplify right side
    31,596.09x = 610,641,088.62
  5. Step 5: Solve for x
    x = 610,641,088.62/31,596.09
  6. Step 6: Final answer
    x = 19,326.48

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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.