Home / 31,431.30-47,136.87-10,366.61

Finding the Fourth Proportional to 31,431.30, 47,136.87 and 10,366.61

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Solution

The fourth proportional to 31,431.30, 47,136.87 and 10,366.61 is: 15,546.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.30 : 47,136.87 = 10,366.61 : x
  2. Step 2: Convert to fraction form
    31,431.30/47,136.87 = 10,366.61/x
  3. Step 3: Cross multiply
    31,431.30x = 47,136.87 × 10,366.61
  4. Step 4: Simplify right side
    31,431.30x = 488,649,547.91
  5. Step 5: Solve for x
    x = 488,649,547.91/31,431.30
  6. Step 6: Final answer
    x = 15,546.59

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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.