Home / 18,814.12-28,165.83-12,558.62

Finding the Fourth Proportional to 18,814.12, 28,165.83 and 12,558.62

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Solution

The fourth proportional to 18,814.12, 28,165.83 and 12,558.62 is: 18,800.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.12 : 28,165.83 = 12,558.62 : x
  2. Step 2: Convert to fraction form
    18,814.12/28,165.83 = 12,558.62/x
  3. Step 3: Cross multiply
    18,814.12x = 28,165.83 × 12,558.62
  4. Step 4: Simplify right side
    18,814.12x = 353,723,908.86
  5. Step 5: Solve for x
    x = 353,723,908.86/18,814.12
  6. Step 6: Final answer
    x = 18,800.98

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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.