Home / 21,356.26-29,469.39-12,402.01

Finding the Fourth Proportional to 21,356.26, 29,469.39 and 12,402.01

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Solution

The fourth proportional to 21,356.26, 29,469.39 and 12,402.01 is: 17,113.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,356.26 : 29,469.39 = 12,402.01 : x
  2. Step 2: Convert to fraction form
    21,356.26/29,469.39 = 12,402.01/x
  3. Step 3: Cross multiply
    21,356.26x = 29,469.39 × 12,402.01
  4. Step 4: Simplify right side
    21,356.26x = 365,479,669.47
  5. Step 5: Solve for x
    x = 365,479,669.47/21,356.26
  6. Step 6: Final answer
    x = 17,113.47

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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.