Home / 28,183.38-42,260.43-12,381.94

Finding the Fourth Proportional to 28,183.38, 42,260.43 and 12,381.94

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Solution

The fourth proportional to 28,183.38, 42,260.43 and 12,381.94 is: 18,566.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,183.38 : 42,260.43 = 12,381.94 : x
  2. Step 2: Convert to fraction form
    28,183.38/42,260.43 = 12,381.94/x
  3. Step 3: Cross multiply
    28,183.38x = 42,260.43 × 12,381.94
  4. Step 4: Simplify right side
    28,183.38x = 523,266,108.63
  5. Step 5: Solve for x
    x = 523,266,108.63/28,183.38
  6. Step 6: Final answer
    x = 18,566.48

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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.