Home / 28,920.21-43,379.72-9,198.81

Finding the Fourth Proportional to 28,920.21, 43,379.72 and 9,198.81

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Solution

The fourth proportional to 28,920.21, 43,379.72 and 9,198.81 is: 13,798.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.21 : 43,379.72 = 9,198.81 : x
  2. Step 2: Convert to fraction form
    28,920.21/43,379.72 = 9,198.81/x
  3. Step 3: Cross multiply
    28,920.21x = 43,379.72 × 9,198.81
  4. Step 4: Simplify right side
    28,920.21x = 399,041,756.14
  5. Step 5: Solve for x
    x = 399,041,756.14/28,920.21
  6. Step 6: Final answer
    x = 13,798.02

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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.