Home / 21,168.43-29,225.63-13,627.82

Finding the Fourth Proportional to 21,168.43, 29,225.63 and 13,627.82

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Solution

The fourth proportional to 21,168.43, 29,225.63 and 13,627.82 is: 18,814.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.43 : 29,225.63 = 13,627.82 : x
  2. Step 2: Convert to fraction form
    21,168.43/29,225.63 = 13,627.82/x
  3. Step 3: Cross multiply
    21,168.43x = 29,225.63 × 13,627.82
  4. Step 4: Simplify right side
    21,168.43x = 398,281,732.16
  5. Step 5: Solve for x
    x = 398,281,732.16/21,168.43
  6. Step 6: Final answer
    x = 18,814.89

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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.