Home / 13,728.35-18,945.24-7,440.73

Finding the Fourth Proportional to 13,728.35, 18,945.24 and 7,440.73

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Solution

The fourth proportional to 13,728.35, 18,945.24 and 7,440.73 is: 10,268.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.35 : 18,945.24 = 7,440.73 : x
  2. Step 2: Convert to fraction form
    13,728.35/18,945.24 = 7,440.73/x
  3. Step 3: Cross multiply
    13,728.35x = 18,945.24 × 7,440.73
  4. Step 4: Simplify right side
    13,728.35x = 140,966,368.26
  5. Step 5: Solve for x
    x = 140,966,368.26/13,728.35
  6. Step 6: Final answer
    x = 10,268.27

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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.