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Finding the Fourth Proportional to 18,819.99, 28,226.37 and 9,457.41

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Solution

The fourth proportional to 18,819.99, 28,226.37 and 9,457.41 is: 14,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.99 : 28,226.37 = 9,457.41 : x
  2. Step 2: Convert to fraction form
    18,819.99/28,226.37 = 9,457.41/x
  3. Step 3: Cross multiply
    18,819.99x = 28,226.37 × 9,457.41
  4. Step 4: Simplify right side
    18,819.99x = 266,948,353.90
  5. Step 5: Solve for x
    x = 266,948,353.90/18,819.99
  6. Step 6: Final answer
    x = 14,184.30

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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.