Home / 13,887.99-19,164.94-7,921.56

Finding the Fourth Proportional to 13,887.99, 19,164.94 and 7,921.56

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Solution

The fourth proportional to 13,887.99, 19,164.94 and 7,921.56 is: 10,931.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887.99 : 19,164.94 = 7,921.56 : x
  2. Step 2: Convert to fraction form
    13,887.99/19,164.94 = 7,921.56/x
  3. Step 3: Cross multiply
    13,887.99x = 19,164.94 × 7,921.56
  4. Step 4: Simplify right side
    13,887.99x = 151,816,274.17
  5. Step 5: Solve for x
    x = 151,816,274.17/13,887.99
  6. Step 6: Final answer
    x = 10,931.48

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Similar ratio
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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.