Home / 13,351.40-19,998.30-11,892.20

Finding the Fourth Proportional to 13,351.40, 19,998.30 and 11,892.20

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Solution

The fourth proportional to 13,351.40, 19,998.30 and 11,892.20 is: 17,812.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.40 : 19,998.30 = 11,892.20 : x
  2. Step 2: Convert to fraction form
    13,351.40/19,998.30 = 11,892.20/x
  3. Step 3: Cross multiply
    13,351.40x = 19,998.30 × 11,892.20
  4. Step 4: Simplify right side
    13,351.40x = 237,823,783.26
  5. Step 5: Solve for x
    x = 237,823,783.26/13,351.40
  6. Step 6: Final answer
    x = 17,812.65

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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.