Home / 28,162.22-42,257.89-12,378.33

Finding the Fourth Proportional to 28,162.22, 42,257.89 and 12,378.33

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Solution

The fourth proportional to 28,162.22, 42,257.89 and 12,378.33 is: 18,573.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,162.22 : 42,257.89 = 12,378.33 : x
  2. Step 2: Convert to fraction form
    28,162.22/42,257.89 = 12,378.33/x
  3. Step 3: Cross multiply
    28,162.22x = 42,257.89 × 12,378.33
  4. Step 4: Simplify right side
    28,162.22x = 523,082,165.01
  5. Step 5: Solve for x
    x = 523,082,165.01/28,162.22
  6. Step 6: Final answer
    x = 18,573.90

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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.