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Finding the Fourth Proportional to 19,008.65, 28,520.94 and 8,471.41

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Solution

The fourth proportional to 19,008.65, 28,520.94 and 8,471.41 is: 12,710.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.65 : 28,520.94 = 8,471.41 : x
  2. Step 2: Convert to fraction form
    19,008.65/28,520.94 = 8,471.41/x
  3. Step 3: Cross multiply
    19,008.65x = 28,520.94 × 8,471.41
  4. Step 4: Simplify right side
    19,008.65x = 241,612,576.33
  5. Step 5: Solve for x
    x = 241,612,576.33/19,008.65
  6. Step 6: Final answer
    x = 12,710.66

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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.