Home / 18,970.37-28,455.53-5,643.30

Finding the Fourth Proportional to 18,970.37, 28,455.53 and 5,643.30

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Solution

The fourth proportional to 18,970.37, 28,455.53 and 5,643.30 is: 8,464.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.37 : 28,455.53 = 5,643.30 : x
  2. Step 2: Convert to fraction form
    18,970.37/28,455.53 = 5,643.30/x
  3. Step 3: Cross multiply
    18,970.37x = 28,455.53 × 5,643.30
  4. Step 4: Simplify right side
    18,970.37x = 160,583,170.94
  5. Step 5: Solve for x
    x = 160,583,170.94/18,970.37
  6. Step 6: Final answer
    x = 8,464.95

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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.