Home / 31,866.90-47,757.30-12,134.69

Finding the Fourth Proportional to 31,866.90, 47,757.30 and 12,134.69

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Solution

The fourth proportional to 31,866.90, 47,757.30 and 12,134.69 is: 18,185.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,866.90 : 47,757.30 = 12,134.69 : x
  2. Step 2: Convert to fraction form
    31,866.90/47,757.30 = 12,134.69/x
  3. Step 3: Cross multiply
    31,866.90x = 47,757.30 × 12,134.69
  4. Step 4: Simplify right side
    31,866.90x = 579,519,925.54
  5. Step 5: Solve for x
    x = 579,519,925.54/31,866.90
  6. Step 6: Final answer
    x = 18,185.64

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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.