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Finding the Fourth Proportional to 18,517, 25,556.34 and 11,069.32

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Solution

The fourth proportional to 18,517, 25,556.34 and 11,069.32 is: 15,277.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517 : 25,556.34 = 11,069.32 : x
  2. Step 2: Convert to fraction form
    18,517/25,556.34 = 11,069.32/x
  3. Step 3: Cross multiply
    18,517x = 25,556.34 × 11,069.32
  4. Step 4: Simplify right side
    18,517x = 282,891,305.49
  5. Step 5: Solve for x
    x = 282,891,305.49/18,517
  6. Step 6: Final answer
    x = 15,277.38

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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.