Home / 18,980.90-28,466.43-5,650.76

Finding the Fourth Proportional to 18,980.90, 28,466.43 and 5,650.76

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Solution

The fourth proportional to 18,980.90, 28,466.43 and 5,650.76 is: 8,474.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.90 : 28,466.43 = 5,650.76 : x
  2. Step 2: Convert to fraction form
    18,980.90/28,466.43 = 5,650.76/x
  3. Step 3: Cross multiply
    18,980.90x = 28,466.43 × 5,650.76
  4. Step 4: Simplify right side
    18,980.90x = 160,856,963.99
  5. Step 5: Solve for x
    x = 160,856,963.99/18,980.90
  6. Step 6: Final answer
    x = 8,474.68

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1.5x scale

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.