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Finding the Fourth Proportional to 18,650.95, 28,078.52 and 17,017.99

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Solution

The fourth proportional to 18,650.95, 28,078.52 and 17,017.99 is: 25,620.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,650.95 : 28,078.52 = 17,017.99 : x
  2. Step 2: Convert to fraction form
    18,650.95/28,078.52 = 17,017.99/x
  3. Step 3: Cross multiply
    18,650.95x = 28,078.52 × 17,017.99
  4. Step 4: Simplify right side
    18,650.95x = 477,839,972.57
  5. Step 5: Solve for x
    x = 477,839,972.57/18,650.95
  6. Step 6: Final answer
    x = 25,620.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.