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Finding the Fourth Proportional to 30,551.80, 45,821.30 and 14,980.60

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Solution

The fourth proportional to 30,551.80, 45,821.30 and 14,980.60 is: 22,467.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,551.80 : 45,821.30 = 14,980.60 : x
  2. Step 2: Convert to fraction form
    30,551.80/45,821.30 = 14,980.60/x
  3. Step 3: Cross multiply
    30,551.80x = 45,821.30 × 14,980.60
  4. Step 4: Simplify right side
    30,551.80x = 686,430,566.78
  5. Step 5: Solve for x
    x = 686,430,566.78/30,551.80
  6. Step 6: Final answer
    x = 22,467.76

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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.