Home / 30,866.21-46,310.43-12,135.88

Finding the Fourth Proportional to 30,866.21, 46,310.43 and 12,135.88

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Solution

The fourth proportional to 30,866.21, 46,310.43 and 12,135.88 is: 18,208.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,866.21 : 46,310.43 = 12,135.88 : x
  2. Step 2: Convert to fraction form
    30,866.21/46,310.43 = 12,135.88/x
  3. Step 3: Cross multiply
    30,866.21x = 46,310.43 × 12,135.88
  4. Step 4: Simplify right side
    30,866.21x = 562,017,664.13
  5. Step 5: Solve for x
    x = 562,017,664.13/30,866.21
  6. Step 6: Final answer
    x = 18,208.18

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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.