Home / 18,285.10-25,235.49-15,295.66

Finding the Fourth Proportional to 18,285.10, 25,235.49 and 15,295.66

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Solution

The fourth proportional to 18,285.10, 25,235.49 and 15,295.66 is: 21,109.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.10 : 25,235.49 = 15,295.66 : x
  2. Step 2: Convert to fraction form
    18,285.10/25,235.49 = 15,295.66/x
  3. Step 3: Cross multiply
    18,285.10x = 25,235.49 × 15,295.66
  4. Step 4: Simplify right side
    18,285.10x = 385,993,474.97
  5. Step 5: Solve for x
    x = 385,993,474.97/18,285.10
  6. Step 6: Final answer
    x = 21,109.73

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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.