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Finding the Fourth Proportional to 28,922.36, 43,384.74 and 9,198.86

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Solution

The fourth proportional to 28,922.36, 43,384.74 and 9,198.86 is: 13,798.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,922.36 : 43,384.74 = 9,198.86 : x
  2. Step 2: Convert to fraction form
    28,922.36/43,384.74 = 9,198.86/x
  3. Step 3: Cross multiply
    28,922.36x = 43,384.74 × 9,198.86
  4. Step 4: Simplify right side
    28,922.36x = 399,090,149.40
  5. Step 5: Solve for x
    x = 399,090,149.40/28,922.36
  6. Step 6: Final answer
    x = 13,798.67

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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.