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Finding the Fourth Proportional to 19,201.43, 28,807.01 and 8,102.41

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Solution

The fourth proportional to 19,201.43, 28,807.01 and 8,102.41 is: 12,155.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.43 : 28,807.01 = 8,102.41 : x
  2. Step 2: Convert to fraction form
    19,201.43/28,807.01 = 8,102.41/x
  3. Step 3: Cross multiply
    19,201.43x = 28,807.01 × 8,102.41
  4. Step 4: Simplify right side
    19,201.43x = 233,406,123.75
  5. Step 5: Solve for x
    x = 233,406,123.75/19,201.43
  6. Step 6: Final answer
    x = 12,155.66

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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.