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Finding the Fourth Proportional to 30,396.60, 45,578.70 and 12,846.60

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Solution

The fourth proportional to 30,396.60, 45,578.70 and 12,846.60 is: 19,263.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,396.60 : 45,578.70 = 12,846.60 : x
  2. Step 2: Convert to fraction form
    30,396.60/45,578.70 = 12,846.60/x
  3. Step 3: Cross multiply
    30,396.60x = 45,578.70 × 12,846.60
  4. Step 4: Simplify right side
    30,396.60x = 585,531,327.42
  5. Step 5: Solve for x
    x = 585,531,327.42/30,396.60
  6. Step 6: Final answer
    x = 19,263.05

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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.