Home / 15,811.57-23,721.45-8,409.94

Finding the Fourth Proportional to 15,811.57, 23,721.45 and 8,409.94

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Solution

The fourth proportional to 15,811.57, 23,721.45 and 8,409.94 is: 12,617.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.57 : 23,721.45 = 8,409.94 : x
  2. Step 2: Convert to fraction form
    15,811.57/23,721.45 = 8,409.94/x
  3. Step 3: Cross multiply
    15,811.57x = 23,721.45 × 8,409.94
  4. Step 4: Simplify right side
    15,811.57x = 199,495,911.91
  5. Step 5: Solve for x
    x = 199,495,911.91/15,811.57
  6. Step 6: Final answer
    x = 12,617.09

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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.