Home / 28,453.60-42,704.70-12,682.90

Finding the Fourth Proportional to 28,453.60, 42,704.70 and 12,682.90

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Solution

The fourth proportional to 28,453.60, 42,704.70 and 12,682.90 is: 19,035.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.60 : 42,704.70 = 12,682.90 : x
  2. Step 2: Convert to fraction form
    28,453.60/42,704.70 = 12,682.90/x
  3. Step 3: Cross multiply
    28,453.60x = 42,704.70 × 12,682.90
  4. Step 4: Simplify right side
    28,453.60x = 541,619,439.63
  5. Step 5: Solve for x
    x = 541,619,439.63/28,453.60
  6. Step 6: Final answer
    x = 19,035.18

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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.