Home / 21,635.36-29,857.44-13,247.12

Finding the Fourth Proportional to 21,635.36, 29,857.44 and 13,247.12

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Solution

The fourth proportional to 21,635.36, 29,857.44 and 13,247.12 is: 18,281.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,635.36 : 29,857.44 = 13,247.12 : x
  2. Step 2: Convert to fraction form
    21,635.36/29,857.44 = 13,247.12/x
  3. Step 3: Cross multiply
    21,635.36x = 29,857.44 × 13,247.12
  4. Step 4: Simplify right side
    21,635.36x = 395,525,090.57
  5. Step 5: Solve for x
    x = 395,525,090.57/21,635.36
  6. Step 6: Final answer
    x = 18,281.42

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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.