Home / 19,021.44-28,538.90-8,490.50

Finding the Fourth Proportional to 19,021.44, 28,538.90 and 8,490.50

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Solution

The fourth proportional to 19,021.44, 28,538.90 and 8,490.50 is: 12,738.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,021.44 : 28,538.90 = 8,490.50 : x
  2. Step 2: Convert to fraction form
    19,021.44/28,538.90 = 8,490.50/x
  3. Step 3: Cross multiply
    19,021.44x = 28,538.90 × 8,490.50
  4. Step 4: Simplify right side
    19,021.44x = 242,309,530.45
  5. Step 5: Solve for x
    x = 242,309,530.45/19,021.44
  6. Step 6: Final answer
    x = 12,738.76

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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.