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Finding the Fourth Proportional to 19,048.92, 28,563.12 and 8,655

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Solution

The fourth proportional to 19,048.92, 28,563.12 and 8,655 is: 12,977.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,048.92 : 28,563.12 = 8,655 : x
  2. Step 2: Convert to fraction form
    19,048.92/28,563.12 = 8,655/x
  3. Step 3: Cross multiply
    19,048.92x = 28,563.12 × 8,655
  4. Step 4: Simplify right side
    19,048.92x = 247,213,803.60
  5. Step 5: Solve for x
    x = 247,213,803.60/19,048.92
  6. Step 6: Final answer
    x = 12,977.84

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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.