Home / 26,806.19-40,178.30-19,680.21

Finding the Fourth Proportional to 26,806.19, 40,178.30 and 19,680.21

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Solution

The fourth proportional to 26,806.19, 40,178.30 and 19,680.21 is: 29,497.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,806.19 : 40,178.30 = 19,680.21 : x
  2. Step 2: Convert to fraction form
    26,806.19/40,178.30 = 19,680.21/x
  3. Step 3: Cross multiply
    26,806.19x = 40,178.30 × 19,680.21
  4. Step 4: Simplify right side
    26,806.19x = 790,717,283.04
  5. Step 5: Solve for x
    x = 790,717,283.04/26,806.19
  6. Step 6: Final answer
    x = 29,497.57

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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.