Home / 11,234.49-15,489.19-9,210.57

Finding the Fourth Proportional to 11,234.49, 15,489.19 and 9,210.57

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Solution

The fourth proportional to 11,234.49, 15,489.19 and 9,210.57 is: 12,698.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,234.49 : 15,489.19 = 9,210.57 : x
  2. Step 2: Convert to fraction form
    11,234.49/15,489.19 = 9,210.57/x
  3. Step 3: Cross multiply
    11,234.49x = 15,489.19 × 9,210.57
  4. Step 4: Simplify right side
    11,234.49x = 142,664,268.74
  5. Step 5: Solve for x
    x = 142,664,268.74/11,234.49
  6. Step 6: Final answer
    x = 12,698.78

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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.