Home / 28,912.10-43,384.35-12,269.30

Finding the Fourth Proportional to 28,912.10, 43,384.35 and 12,269.30

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Solution

The fourth proportional to 28,912.10, 43,384.35 and 12,269.30 is: 18,410.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.10 : 43,384.35 = 12,269.30 : x
  2. Step 2: Convert to fraction form
    28,912.10/43,384.35 = 12,269.30/x
  3. Step 3: Cross multiply
    28,912.10x = 43,384.35 × 12,269.30
  4. Step 4: Simplify right side
    28,912.10x = 532,295,605.46
  5. Step 5: Solve for x
    x = 532,295,605.46/28,912.10
  6. Step 6: Final answer
    x = 18,410.82

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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.