Home / 30,033.80-45,002.10-18,920.60

Finding the Fourth Proportional to 30,033.80, 45,002.10 and 18,920.60

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Solution

The fourth proportional to 30,033.80, 45,002.10 and 18,920.60 is: 28,350.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,033.80 : 45,002.10 = 18,920.60 : x
  2. Step 2: Convert to fraction form
    30,033.80/45,002.10 = 18,920.60/x
  3. Step 3: Cross multiply
    30,033.80x = 45,002.10 × 18,920.60
  4. Step 4: Simplify right side
    30,033.80x = 851,466,733.26
  5. Step 5: Solve for x
    x = 851,466,733.26/30,033.80
  6. Step 6: Final answer
    x = 28,350.28

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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.