Home / 13,515.54-18,650.43-8,479.50

Finding the Fourth Proportional to 13,515.54, 18,650.43 and 8,479.50

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Solution

The fourth proportional to 13,515.54, 18,650.43 and 8,479.50 is: 11,701.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.54 : 18,650.43 = 8,479.50 : x
  2. Step 2: Convert to fraction form
    13,515.54/18,650.43 = 8,479.50/x
  3. Step 3: Cross multiply
    13,515.54x = 18,650.43 × 8,479.50
  4. Step 4: Simplify right side
    13,515.54x = 158,146,321.19
  5. Step 5: Solve for x
    x = 158,146,321.19/13,515.54
  6. Step 6: Final answer
    x = 11,701.07

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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.