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Finding the Fourth Proportional to 8,493.70, 12,740.55 and 8,364.10

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Solution

The fourth proportional to 8,493.70, 12,740.55 and 8,364.10 is: 12,546.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,493.70 : 12,740.55 = 8,364.10 : x
  2. Step 2: Convert to fraction form
    8,493.70/12,740.55 = 8,364.10/x
  3. Step 3: Cross multiply
    8,493.70x = 12,740.55 × 8,364.10
  4. Step 4: Simplify right side
    8,493.70x = 106,563,234.26
  5. Step 5: Solve for x
    x = 106,563,234.26/8,493.70
  6. Step 6: Final answer
    x = 12,546.15

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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.