Home / 18,811,457.30-28,215,815.54-8,439,887.96

Finding the Fourth Proportional to 18,811,457.30, 28,215,815.54 and 8,439,887.96

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Solution

The fourth proportional to 18,811,457.30, 28,215,815.54 and 8,439,887.96 is: 12,659,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811,457.30 : 28,215,815.54 = 8,439,887.96 : x
  2. Step 2: Convert to fraction form
    18,811,457.30/28,215,815.54 = 8,439,887.96/x
  3. Step 3: Cross multiply
    18,811,457.30x = 28,215,815.54 × 8,439,887.96
  4. Step 4: Simplify right side
    18,811,457.30x = 238,138,321,857,626.91
  5. Step 5: Solve for x
    x = 238,138,321,857,626.91/18,811,457.30
  6. Step 6: Final answer
    x = 12,659,217.10

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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.