Home / 19,955.34-27,540.18-11,997.36

Finding the Fourth Proportional to 19,955.34, 27,540.18 and 11,997.36

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Solution

The fourth proportional to 19,955.34, 27,540.18 and 11,997.36 is: 16,557.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,955.34 : 27,540.18 = 11,997.36 : x
  2. Step 2: Convert to fraction form
    19,955.34/27,540.18 = 11,997.36/x
  3. Step 3: Cross multiply
    19,955.34x = 27,540.18 × 11,997.36
  4. Step 4: Simplify right side
    19,955.34x = 330,409,453.92
  5. Step 5: Solve for x
    x = 330,409,453.92/19,955.34
  6. Step 6: Final answer
    x = 16,557.45

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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.