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Finding the Fourth Proportional to 18,254.89, 25,195.89 and 15,265.54

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Solution

The fourth proportional to 18,254.89, 25,195.89 and 15,265.54 is: 21,069.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,254.89 : 25,195.89 = 15,265.54 : x
  2. Step 2: Convert to fraction form
    18,254.89/25,195.89 = 15,265.54/x
  3. Step 3: Cross multiply
    18,254.89x = 25,195.89 × 15,265.54
  4. Step 4: Simplify right side
    18,254.89x = 384,628,866.63
  5. Step 5: Solve for x
    x = 384,628,866.63/18,254.89
  6. Step 6: Final answer
    x = 21,069.91

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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.