Home / 13,889.36-19,171.34-7,924.28

Finding the Fourth Proportional to 13,889.36, 19,171.34 and 7,924.28

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Solution

The fourth proportional to 13,889.36, 19,171.34 and 7,924.28 is: 10,937.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.36 : 19,171.34 = 7,924.28 : x
  2. Step 2: Convert to fraction form
    13,889.36/19,171.34 = 7,924.28/x
  3. Step 3: Cross multiply
    13,889.36x = 19,171.34 × 7,924.28
  4. Step 4: Simplify right side
    13,889.36x = 151,919,066.14
  5. Step 5: Solve for x
    x = 151,919,066.14/13,889.36
  6. Step 6: Final answer
    x = 10,937.80

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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.