Home / 21,543.26-29,725.29-12,589.02

Finding the Fourth Proportional to 21,543.26, 29,725.29 and 12,589.02

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Solution

The fourth proportional to 21,543.26, 29,725.29 and 12,589.02 is: 17,370.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,543.26 : 29,725.29 = 12,589.02 : x
  2. Step 2: Convert to fraction form
    21,543.26/29,725.29 = 12,589.02/x
  3. Step 3: Cross multiply
    21,543.26x = 29,725.29 × 12,589.02
  4. Step 4: Simplify right side
    21,543.26x = 374,212,270.32
  5. Step 5: Solve for x
    x = 374,212,270.32/21,543.26
  6. Step 6: Final answer
    x = 17,370.27

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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.