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Finding the Fourth Proportional to 18,203.87, 25,114.48 and 10,647.79

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Solution

The fourth proportional to 18,203.87, 25,114.48 and 10,647.79 is: 14,689.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.87 : 25,114.48 = 10,647.79 : x
  2. Step 2: Convert to fraction form
    18,203.87/25,114.48 = 10,647.79/x
  3. Step 3: Cross multiply
    18,203.87x = 25,114.48 × 10,647.79
  4. Step 4: Simplify right side
    18,203.87x = 267,413,709.00
  5. Step 5: Solve for x
    x = 267,413,709.00/18,203.87
  6. Step 6: Final answer
    x = 14,689.94

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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.