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Finding the Fourth Proportional to 43,797.18, 65,705.49 and 12,630

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Solution

The fourth proportional to 43,797.18, 65,705.49 and 12,630 is: 18,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,797.18 : 65,705.49 = 12,630 : x
  2. Step 2: Convert to fraction form
    43,797.18/65,705.49 = 12,630/x
  3. Step 3: Cross multiply
    43,797.18x = 65,705.49 × 12,630
  4. Step 4: Simplify right side
    43,797.18x = 829,860,338.70
  5. Step 5: Solve for x
    x = 829,860,338.70/43,797.18
  6. Step 6: Final answer
    x = 18,947.80

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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.