Home / 21,172.52-29,144.75-18,299.94

Finding the Fourth Proportional to 21,172.52, 29,144.75 and 18,299.94

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Solution

The fourth proportional to 21,172.52, 29,144.75 and 18,299.94 is: 25,190.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.52 : 29,144.75 = 18,299.94 : x
  2. Step 2: Convert to fraction form
    21,172.52/29,144.75 = 18,299.94/x
  3. Step 3: Cross multiply
    21,172.52x = 29,144.75 × 18,299.94
  4. Step 4: Simplify right side
    21,172.52x = 533,347,057.49
  5. Step 5: Solve for x
    x = 533,347,057.49/21,172.52
  6. Step 6: Final answer
    x = 25,190.53

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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.