Home / 15,747.15-21,730.53-8,673.57

Finding the Fourth Proportional to 15,747.15, 21,730.53 and 8,673.57

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Solution

The fourth proportional to 15,747.15, 21,730.53 and 8,673.57 is: 11,969.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,747.15 : 21,730.53 = 8,673.57 : x
  2. Step 2: Convert to fraction form
    15,747.15/21,730.53 = 8,673.57/x
  3. Step 3: Cross multiply
    15,747.15x = 21,730.53 × 8,673.57
  4. Step 4: Simplify right side
    15,747.15x = 188,481,273.09
  5. Step 5: Solve for x
    x = 188,481,273.09/15,747.15
  6. Step 6: Final answer
    x = 11,969.23

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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.