Home / 13,456.44-18,569.99-8,147.57

Finding the Fourth Proportional to 13,456.44, 18,569.99 and 8,147.57

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Solution

The fourth proportional to 13,456.44, 18,569.99 and 8,147.57 is: 11,243.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,456.44 : 18,569.99 = 8,147.57 : x
  2. Step 2: Convert to fraction form
    13,456.44/18,569.99 = 8,147.57/x
  3. Step 3: Cross multiply
    13,456.44x = 18,569.99 × 8,147.57
  4. Step 4: Simplify right side
    13,456.44x = 151,300,220.94
  5. Step 5: Solve for x
    x = 151,300,220.94/13,456.44
  6. Step 6: Final answer
    x = 11,243.70

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1.5x scale

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.