Home / 21,189.36-29,247.03-13,226.79

Finding the Fourth Proportional to 21,189.36, 29,247.03 and 13,226.79

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Solution

The fourth proportional to 21,189.36, 29,247.03 and 13,226.79 is: 18,256.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.36 : 29,247.03 = 13,226.79 : x
  2. Step 2: Convert to fraction form
    21,189.36/29,247.03 = 13,226.79/x
  3. Step 3: Cross multiply
    21,189.36x = 29,247.03 × 13,226.79
  4. Step 4: Simplify right side
    21,189.36x = 386,844,323.93
  5. Step 5: Solve for x
    x = 386,844,323.93/21,189.36
  6. Step 6: Final answer
    x = 18,256.54

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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.