Home / 13,713.45-18,921.39-8,047.92

Finding the Fourth Proportional to 13,713.45, 18,921.39 and 8,047.92

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Solution

The fourth proportional to 13,713.45, 18,921.39 and 8,047.92 is: 11,104.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,713.45 : 18,921.39 = 8,047.92 : x
  2. Step 2: Convert to fraction form
    13,713.45/18,921.39 = 8,047.92/x
  3. Step 3: Cross multiply
    13,713.45x = 18,921.39 × 8,047.92
  4. Step 4: Simplify right side
    13,713.45x = 152,277,833.01
  5. Step 5: Solve for x
    x = 152,277,833.01/13,713.45
  6. Step 6: Final answer
    x = 11,104.27

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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.