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Finding the Fourth Proportional to 30,512.60, 45,797.70 and 18,848.60

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Solution

The fourth proportional to 30,512.60, 45,797.70 and 18,848.60 is: 28,290.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,512.60 : 45,797.70 = 18,848.60 : x
  2. Step 2: Convert to fraction form
    30,512.60/45,797.70 = 18,848.60/x
  3. Step 3: Cross multiply
    30,512.60x = 45,797.70 × 18,848.60
  4. Step 4: Simplify right side
    30,512.60x = 863,222,528.22
  5. Step 5: Solve for x
    x = 863,222,528.22/30,512.60
  6. Step 6: Final answer
    x = 28,290.69

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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.