Home / 18,821.36-28,233.24-4,970

Finding the Fourth Proportional to 18,821.36, 28,233.24 and 4,970

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Solution

The fourth proportional to 18,821.36, 28,233.24 and 4,970 is: 7,455.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.36 : 28,233.24 = 4,970 : x
  2. Step 2: Convert to fraction form
    18,821.36/28,233.24 = 4,970/x
  3. Step 3: Cross multiply
    18,821.36x = 28,233.24 × 4,970
  4. Step 4: Simplify right side
    18,821.36x = 140,319,202.80
  5. Step 5: Solve for x
    x = 140,319,202.80/18,821.36
  6. Step 6: Final answer
    x = 7,455.32

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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.