Home / 30,905.13-46,378.43-12,183.05

Finding the Fourth Proportional to 30,905.13, 46,378.43 and 12,183.05

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Solution

The fourth proportional to 30,905.13, 46,378.43 and 12,183.05 is: 18,282.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,905.13 : 46,378.43 = 12,183.05 : x
  2. Step 2: Convert to fraction form
    30,905.13/46,378.43 = 12,183.05/x
  3. Step 3: Cross multiply
    30,905.13x = 46,378.43 × 12,183.05
  4. Step 4: Simplify right side
    30,905.13x = 565,030,731.61
  5. Step 5: Solve for x
    x = 565,030,731.61/30,905.13
  6. Step 6: Final answer
    x = 18,282.75

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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.