Home / 13,998.40-21,001.20-5,233.36

Finding the Fourth Proportional to 13,998.40, 21,001.20 and 5,233.36

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Solution

The fourth proportional to 13,998.40, 21,001.20 and 5,233.36 is: 7,851.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.40 : 21,001.20 = 5,233.36 : x
  2. Step 2: Convert to fraction form
    13,998.40/21,001.20 = 5,233.36/x
  3. Step 3: Cross multiply
    13,998.40x = 21,001.20 × 5,233.36
  4. Step 4: Simplify right side
    13,998.40x = 109,906,840.03
  5. Step 5: Solve for x
    x = 109,906,840.03/13,998.40
  6. Step 6: Final answer
    x = 7,851.39

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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.