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Finding the Fourth Proportional to 30,990.44, 46,480.28 and 8,798.63

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Solution

The fourth proportional to 30,990.44, 46,480.28 and 8,798.63 is: 13,196.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.44 : 46,480.28 = 8,798.63 : x
  2. Step 2: Convert to fraction form
    30,990.44/46,480.28 = 8,798.63/x
  3. Step 3: Cross multiply
    30,990.44x = 46,480.28 × 8,798.63
  4. Step 4: Simplify right side
    30,990.44x = 408,962,509.62
  5. Step 5: Solve for x
    x = 408,962,509.62/30,990.44
  6. Step 6: Final answer
    x = 13,196.41

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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.