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Finding the Fourth Proportional to 18,672.36, 28,011.27 and 6,826.71

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Solution

The fourth proportional to 18,672.36, 28,011.27 and 6,826.71 is: 10,241.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.36 : 28,011.27 = 6,826.71 : x
  2. Step 2: Convert to fraction form
    18,672.36/28,011.27 = 6,826.71/x
  3. Step 3: Cross multiply
    18,672.36x = 28,011.27 × 6,826.71
  4. Step 4: Simplify right side
    18,672.36x = 191,224,817.02
  5. Step 5: Solve for x
    x = 191,224,817.02/18,672.36
  6. Step 6: Final answer
    x = 10,241.06

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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.