Home / 21,164.32-29,188.56-13,198.24

Finding the Fourth Proportional to 21,164.32, 29,188.56 and 13,198.24

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Solution

The fourth proportional to 21,164.32, 29,188.56 and 13,198.24 is: 18,202.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.32 : 29,188.56 = 13,198.24 : x
  2. Step 2: Convert to fraction form
    21,164.32/29,188.56 = 13,198.24/x
  3. Step 3: Cross multiply
    21,164.32x = 29,188.56 × 13,198.24
  4. Step 4: Simplify right side
    21,164.32x = 385,237,620.13
  5. Step 5: Solve for x
    x = 385,237,620.13/21,164.32
  6. Step 6: Final answer
    x = 18,202.22

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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.