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Finding the Fourth Proportional to 8,895.14, 13,410.25 and 8,418.86

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Solution

The fourth proportional to 8,895.14, 13,410.25 and 8,418.86 is: 12,692.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,895.14 : 13,410.25 = 8,418.86 : x
  2. Step 2: Convert to fraction form
    8,895.14/13,410.25 = 8,418.86/x
  3. Step 3: Cross multiply
    8,895.14x = 13,410.25 × 8,418.86
  4. Step 4: Simplify right side
    8,895.14x = 112,898,975.22
  5. Step 5: Solve for x
    x = 112,898,975.22/8,895.14
  6. Step 6: Final answer
    x = 12,692.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.