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Finding the Fourth Proportional to 8,995.86, 13,486.50 and 8,480.70

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Solution

The fourth proportional to 8,995.86, 13,486.50 and 8,480.70 is: 12,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,995.86 : 13,486.50 = 8,480.70 : x
  2. Step 2: Convert to fraction form
    8,995.86/13,486.50 = 8,480.70/x
  3. Step 3: Cross multiply
    8,995.86x = 13,486.50 × 8,480.70
  4. Step 4: Simplify right side
    8,995.86x = 114,374,960.55
  5. Step 5: Solve for x
    x = 114,374,960.55/8,995.86
  6. Step 6: Final answer
    x = 12,714.18

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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.