Home / 15,414.55-21,271.86-8,608.50

Finding the Fourth Proportional to 15,414.55, 21,271.86 and 8,608.50

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Solution

The fourth proportional to 15,414.55, 21,271.86 and 8,608.50 is: 11,879.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,414.55 : 21,271.86 = 8,608.50 : x
  2. Step 2: Convert to fraction form
    15,414.55/21,271.86 = 8,608.50/x
  3. Step 3: Cross multiply
    15,414.55x = 21,271.86 × 8,608.50
  4. Step 4: Simplify right side
    15,414.55x = 183,118,782.60
  5. Step 5: Solve for x
    x = 183,118,782.60/15,414.55
  6. Step 6: Final answer
    x = 11,879.61

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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.