Home / 11,211.85-15,470.99-6,431.54

Finding the Fourth Proportional to 11,211.85, 15,470.99 and 6,431.54

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Solution

The fourth proportional to 11,211.85, 15,470.99 and 6,431.54 is: 8,874.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.85 : 15,470.99 = 6,431.54 : x
  2. Step 2: Convert to fraction form
    11,211.85/15,470.99 = 6,431.54/x
  3. Step 3: Cross multiply
    11,211.85x = 15,470.99 × 6,431.54
  4. Step 4: Simplify right side
    11,211.85x = 99,502,291.02
  5. Step 5: Solve for x
    x = 99,502,291.02/11,211.85
  6. Step 6: Final answer
    x = 8,874.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.