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Finding the Fourth Proportional to 17,718.84, 26,578.26 and 7,855.56

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Solution

The fourth proportional to 17,718.84, 26,578.26 and 7,855.56 is: 11,783.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,718.84 : 26,578.26 = 7,855.56 : x
  2. Step 2: Convert to fraction form
    17,718.84/26,578.26 = 7,855.56/x
  3. Step 3: Cross multiply
    17,718.84x = 26,578.26 × 7,855.56
  4. Step 4: Simplify right side
    17,718.84x = 208,787,116.13
  5. Step 5: Solve for x
    x = 208,787,116.13/17,718.84
  6. Step 6: Final answer
    x = 11,783.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.