Home / 28,690.88-43,037.60-8,969.84

Finding the Fourth Proportional to 28,690.88, 43,037.60 and 8,969.84

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Solution

The fourth proportional to 28,690.88, 43,037.60 and 8,969.84 is: 13,455.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,690.88 : 43,037.60 = 8,969.84 : x
  2. Step 2: Convert to fraction form
    28,690.88/43,037.60 = 8,969.84/x
  3. Step 3: Cross multiply
    28,690.88x = 43,037.60 × 8,969.84
  4. Step 4: Simplify right side
    28,690.88x = 386,040,385.98
  5. Step 5: Solve for x
    x = 386,040,385.98/28,690.88
  6. Step 6: Final answer
    x = 13,455.16

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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.