Home / 19,719.12-27,211.79-11,221.26

Finding the Fourth Proportional to 19,719.12, 27,211.79 and 11,221.26

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Solution

The fourth proportional to 19,719.12, 27,211.79 and 11,221.26 is: 15,485.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.12 : 27,211.79 = 11,221.26 : x
  2. Step 2: Convert to fraction form
    19,719.12/27,211.79 = 11,221.26/x
  3. Step 3: Cross multiply
    19,719.12x = 27,211.79 × 11,221.26
  4. Step 4: Simplify right side
    19,719.12x = 305,350,494.30
  5. Step 5: Solve for x
    x = 305,350,494.30/19,719.12
  6. Step 6: Final answer
    x = 15,485.00

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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.