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Finding the Fourth Proportional to 18,818.99, 28,224.87 and 9,456.41

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Solution

The fourth proportional to 18,818.99, 28,224.87 and 9,456.41 is: 14,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.99 : 28,224.87 = 9,456.41 : x
  2. Step 2: Convert to fraction form
    18,818.99/28,224.87 = 9,456.41/x
  3. Step 3: Cross multiply
    18,818.99x = 28,224.87 × 9,456.41
  4. Step 4: Simplify right side
    18,818.99x = 266,905,942.92
  5. Step 5: Solve for x
    x = 266,905,942.92/18,818.99
  6. Step 6: Final answer
    x = 14,182.80

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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.