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Finding the Fourth Proportional to 17,919.84, 26,880.23 and 4,772.23

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Solution

The fourth proportional to 17,919.84, 26,880.23 and 4,772.23 is: 7,158.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,919.84 : 26,880.23 = 4,772.23 : x
  2. Step 2: Convert to fraction form
    17,919.84/26,880.23 = 4,772.23/x
  3. Step 3: Cross multiply
    17,919.84x = 26,880.23 × 4,772.23
  4. Step 4: Simplify right side
    17,919.84x = 128,278,640.01
  5. Step 5: Solve for x
    x = 128,278,640.01/17,919.84
  6. Step 6: Final answer
    x = 7,158.47

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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.