Home / 21,247.07-29,323.25-13,291.86

Finding the Fourth Proportional to 21,247.07, 29,323.25 and 13,291.86

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Solution

The fourth proportional to 21,247.07, 29,323.25 and 13,291.86 is: 18,344.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.07 : 29,323.25 = 13,291.86 : x
  2. Step 2: Convert to fraction form
    21,247.07/29,323.25 = 13,291.86/x
  3. Step 3: Cross multiply
    21,247.07x = 29,323.25 × 13,291.86
  4. Step 4: Simplify right side
    21,247.07x = 389,760,467.29
  5. Step 5: Solve for x
    x = 389,760,467.29/21,247.07
  6. Step 6: Final answer
    x = 18,344.20

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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.