Home / 13,998.36-21,003-5,231.22

Finding the Fourth Proportional to 13,998.36, 21,003 and 5,231.22

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Solution

The fourth proportional to 13,998.36, 21,003 and 5,231.22 is: 7,848.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.36 : 21,003 = 5,231.22 : x
  2. Step 2: Convert to fraction form
    13,998.36/21,003 = 5,231.22/x
  3. Step 3: Cross multiply
    13,998.36x = 21,003 × 5,231.22
  4. Step 4: Simplify right side
    13,998.36x = 109,871,313.66
  5. Step 5: Solve for x
    x = 109,871,313.66/13,998.36
  6. Step 6: Final answer
    x = 7,848.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.