Home / 13,991.36-19,308.08-7,617.92

Finding the Fourth Proportional to 13,991.36, 19,308.08 and 7,617.92

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Solution

The fourth proportional to 13,991.36, 19,308.08 and 7,617.92 is: 10,512.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.36 : 19,308.08 = 7,617.92 : x
  2. Step 2: Convert to fraction form
    13,991.36/19,308.08 = 7,617.92/x
  3. Step 3: Cross multiply
    13,991.36x = 19,308.08 × 7,617.92
  4. Step 4: Simplify right side
    13,991.36x = 147,087,408.79
  5. Step 5: Solve for x
    x = 147,087,408.79/13,991.36
  6. Step 6: Final answer
    x = 10,512.73

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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.