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Finding the Fourth Proportional to 19,149.63, 28,724.23 and 7,471.05

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Solution

The fourth proportional to 19,149.63, 28,724.23 and 7,471.05 is: 11,206.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,149.63 : 28,724.23 = 7,471.05 : x
  2. Step 2: Convert to fraction form
    19,149.63/28,724.23 = 7,471.05/x
  3. Step 3: Cross multiply
    19,149.63x = 28,724.23 × 7,471.05
  4. Step 4: Simplify right side
    19,149.63x = 214,600,158.54
  5. Step 5: Solve for x
    x = 214,600,158.54/19,149.63
  6. Step 6: Final answer
    x = 11,206.49

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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.