Home / 19,021.43-28,538.90-8,490.49

Finding the Fourth Proportional to 19,021.43, 28,538.90 and 8,490.49

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Solution

The fourth proportional to 19,021.43, 28,538.90 and 8,490.49 is: 12,738.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,021.43 : 28,538.90 = 8,490.49 : x
  2. Step 2: Convert to fraction form
    19,021.43/28,538.90 = 8,490.49/x
  3. Step 3: Cross multiply
    19,021.43x = 28,538.90 × 8,490.49
  4. Step 4: Simplify right side
    19,021.43x = 242,309,245.06
  5. Step 5: Solve for x
    x = 242,309,245.06/19,021.43
  6. Step 6: Final answer
    x = 12,738.75

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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.