Home / 28,431.24-42,648.70-8,723.54

Finding the Fourth Proportional to 28,431.24, 42,648.70 and 8,723.54

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Solution

The fourth proportional to 28,431.24, 42,648.70 and 8,723.54 is: 13,085.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.24 : 42,648.70 = 8,723.54 : x
  2. Step 2: Convert to fraction form
    28,431.24/42,648.70 = 8,723.54/x
  3. Step 3: Cross multiply
    28,431.24x = 42,648.70 × 8,723.54
  4. Step 4: Simplify right side
    28,431.24x = 372,047,640.40
  5. Step 5: Solve for x
    x = 372,047,640.40/28,431.24
  6. Step 6: Final answer
    x = 13,085.87

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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.