Home / 15,811.52-23,721.38-8,409.89

Finding the Fourth Proportional to 15,811.52, 23,721.38 and 8,409.89

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Solution

The fourth proportional to 15,811.52, 23,721.38 and 8,409.89 is: 12,617.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.52 : 23,721.38 = 8,409.89 : x
  2. Step 2: Convert to fraction form
    15,811.52/23,721.38 = 8,409.89/x
  3. Step 3: Cross multiply
    15,811.52x = 23,721.38 × 8,409.89
  4. Step 4: Simplify right side
    15,811.52x = 199,494,276.78
  5. Step 5: Solve for x
    x = 199,494,276.78/15,811.52
  6. Step 6: Final answer
    x = 12,617.02

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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.