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Finding the Fourth Proportional to 14,866.13, 20,512.36 and 8,815.25

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Solution

The fourth proportional to 14,866.13, 20,512.36 and 8,815.25 is: 12,163.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,866.13 : 20,512.36 = 8,815.25 : x
  2. Step 2: Convert to fraction form
    14,866.13/20,512.36 = 8,815.25/x
  3. Step 3: Cross multiply
    14,866.13x = 20,512.36 × 8,815.25
  4. Step 4: Simplify right side
    14,866.13x = 180,821,581.49
  5. Step 5: Solve for x
    x = 180,821,581.49/14,866.13
  6. Step 6: Final answer
    x = 12,163.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.