Home / 31,762.26-47,639.70-8,390.52

Finding the Fourth Proportional to 31,762.26, 47,639.70 and 8,390.52

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Solution

The fourth proportional to 31,762.26, 47,639.70 and 8,390.52 is: 12,584.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,762.26 : 47,639.70 = 8,390.52 : x
  2. Step 2: Convert to fraction form
    31,762.26/47,639.70 = 8,390.52/x
  3. Step 3: Cross multiply
    31,762.26x = 47,639.70 × 8,390.52
  4. Step 4: Simplify right side
    31,762.26x = 399,721,855.64
  5. Step 5: Solve for x
    x = 399,721,855.64/31,762.26
  6. Step 6: Final answer
    x = 12,584.81

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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.