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Finding the Fourth Proportional to 18,813.25, 25,953.06 and 15,827.95

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Solution

The fourth proportional to 18,813.25, 25,953.06 and 15,827.95 is: 21,834.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,813.25 : 25,953.06 = 15,827.95 : x
  2. Step 2: Convert to fraction form
    18,813.25/25,953.06 = 15,827.95/x
  3. Step 3: Cross multiply
    18,813.25x = 25,953.06 × 15,827.95
  4. Step 4: Simplify right side
    18,813.25x = 410,783,736.03
  5. Step 5: Solve for x
    x = 410,783,736.03/18,813.25
  6. Step 6: Final answer
    x = 21,834.81

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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.