Home / 31,868.54-47,783.82-12,148.64

Finding the Fourth Proportional to 31,868.54, 47,783.82 and 12,148.64

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Solution

The fourth proportional to 31,868.54, 47,783.82 and 12,148.64 is: 18,215.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,868.54 : 47,783.82 = 12,148.64 : x
  2. Step 2: Convert to fraction form
    31,868.54/47,783.82 = 12,148.64/x
  3. Step 3: Cross multiply
    31,868.54x = 47,783.82 × 12,148.64
  4. Step 4: Simplify right side
    31,868.54x = 580,508,427.00
  5. Step 5: Solve for x
    x = 580,508,427.00/31,868.54
  6. Step 6: Final answer
    x = 18,215.72

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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.