Home / 13,749.28-18,970.71-8,083.73

Finding the Fourth Proportional to 13,749.28, 18,970.71 and 8,083.73

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Solution

The fourth proportional to 13,749.28, 18,970.71 and 8,083.73 is: 11,153.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.28 : 18,970.71 = 8,083.73 : x
  2. Step 2: Convert to fraction form
    13,749.28/18,970.71 = 8,083.73/x
  3. Step 3: Cross multiply
    13,749.28x = 18,970.71 × 8,083.73
  4. Step 4: Simplify right side
    13,749.28x = 153,354,114.66
  5. Step 5: Solve for x
    x = 153,354,114.66/13,749.28
  6. Step 6: Final answer
    x = 11,153.61

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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.