Home / 28,709.46-43,043.40-8,977.32

Finding the Fourth Proportional to 28,709.46, 43,043.40 and 8,977.32

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Solution

The fourth proportional to 28,709.46, 43,043.40 and 8,977.32 is: 13,459.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.46 : 43,043.40 = 8,977.32 : x
  2. Step 2: Convert to fraction form
    28,709.46/43,043.40 = 8,977.32/x
  3. Step 3: Cross multiply
    28,709.46x = 43,043.40 × 8,977.32
  4. Step 4: Simplify right side
    28,709.46x = 386,414,375.69
  5. Step 5: Solve for x
    x = 386,414,375.69/28,709.46
  6. Step 6: Final answer
    x = 13,459.48

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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.