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Finding the Fourth Proportional to 19,266.92, 28,906.21 and 13,655.45

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Solution

The fourth proportional to 19,266.92, 28,906.21 and 13,655.45 is: 20,487.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,266.92 : 28,906.21 = 13,655.45 : x
  2. Step 2: Convert to fraction form
    19,266.92/28,906.21 = 13,655.45/x
  3. Step 3: Cross multiply
    19,266.92x = 28,906.21 × 13,655.45
  4. Step 4: Simplify right side
    19,266.92x = 394,727,305.34
  5. Step 5: Solve for x
    x = 394,727,305.34/19,266.92
  6. Step 6: Final answer
    x = 20,487.31

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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.