Home / 13,231.71-18,260.58-8,747.69

Finding the Fourth Proportional to 13,231.71, 18,260.58 and 8,747.69

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Solution

The fourth proportional to 13,231.71, 18,260.58 and 8,747.69 is: 12,072.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231.71 : 18,260.58 = 8,747.69 : x
  2. Step 2: Convert to fraction form
    13,231.71/18,260.58 = 8,747.69/x
  3. Step 3: Cross multiply
    13,231.71x = 18,260.58 × 8,747.69
  4. Step 4: Simplify right side
    13,231.71x = 159,737,801.76
  5. Step 5: Solve for x
    x = 159,737,801.76/13,231.71
  6. Step 6: Final answer
    x = 12,072.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.