Home / 13,921.56-19,208.97-7,955.19

Finding the Fourth Proportional to 13,921.56, 19,208.97 and 7,955.19

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Solution

The fourth proportional to 13,921.56, 19,208.97 and 7,955.19 is: 10,976.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.56 : 19,208.97 = 7,955.19 : x
  2. Step 2: Convert to fraction form
    13,921.56/19,208.97 = 7,955.19/x
  3. Step 3: Cross multiply
    13,921.56x = 19,208.97 × 7,955.19
  4. Step 4: Simplify right side
    13,921.56x = 152,811,006.05
  5. Step 5: Solve for x
    x = 152,811,006.05/13,921.56
  6. Step 6: Final answer
    x = 10,976.57

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Double scale
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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.