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Finding the Fourth Proportional to 19,102.63, 28,665.46 and 8,158.63

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Solution

The fourth proportional to 19,102.63, 28,665.46 and 8,158.63 is: 12,242.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,102.63 : 28,665.46 = 8,158.63 : x
  2. Step 2: Convert to fraction form
    19,102.63/28,665.46 = 8,158.63/x
  3. Step 3: Cross multiply
    19,102.63x = 28,665.46 × 8,158.63
  4. Step 4: Simplify right side
    19,102.63x = 233,870,881.92
  5. Step 5: Solve for x
    x = 233,870,881.92/19,102.63
  6. Step 6: Final answer
    x = 12,242.86

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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.