Home / 15,511.37-23,280.49-8,121

Finding the Fourth Proportional to 15,511.37, 23,280.49 and 8,121

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Solution

The fourth proportional to 15,511.37, 23,280.49 and 8,121 is: 12,188.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.37 : 23,280.49 = 8,121 : x
  2. Step 2: Convert to fraction form
    15,511.37/23,280.49 = 8,121/x
  3. Step 3: Cross multiply
    15,511.37x = 23,280.49 × 8,121
  4. Step 4: Simplify right side
    15,511.37x = 189,060,859.29
  5. Step 5: Solve for x
    x = 189,060,859.29/15,511.37
  6. Step 6: Final answer
    x = 12,188.53

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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.