Home / 13,906.72-19,190.40-7,617.92

Finding the Fourth Proportional to 13,906.72, 19,190.40 and 7,617.92

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Solution

The fourth proportional to 13,906.72, 19,190.40 and 7,617.92 is: 10,512.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.72 : 19,190.40 = 7,617.92 : x
  2. Step 2: Convert to fraction form
    13,906.72/19,190.40 = 7,617.92/x
  3. Step 3: Cross multiply
    13,906.72x = 19,190.40 × 7,617.92
  4. Step 4: Simplify right side
    13,906.72x = 146,190,931.97
  5. Step 5: Solve for x
    x = 146,190,931.97/13,906.72
  6. Step 6: Final answer
    x = 10,512.25

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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.