Home / 19,517-26,926.11-12,806.33

Finding the Fourth Proportional to 19,517, 26,926.11 and 12,806.33

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Solution

The fourth proportional to 19,517, 26,926.11 and 12,806.33 is: 17,667.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,517 : 26,926.11 = 12,806.33 : x
  2. Step 2: Convert to fraction form
    19,517/26,926.11 = 12,806.33/x
  3. Step 3: Cross multiply
    19,517x = 26,926.11 × 12,806.33
  4. Step 4: Simplify right side
    19,517x = 344,824,650.28
  5. Step 5: Solve for x
    x = 344,824,650.28/19,517
  6. Step 6: Final answer
    x = 17,667.91

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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.