Home / 11,085.60-15,293.60-6,369.20

Finding the Fourth Proportional to 11,085.60, 15,293.60 and 6,369.20

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Solution

The fourth proportional to 11,085.60, 15,293.60 and 6,369.20 is: 8,786.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,085.60 : 15,293.60 = 6,369.20 : x
  2. Step 2: Convert to fraction form
    11,085.60/15,293.60 = 6,369.20/x
  3. Step 3: Cross multiply
    11,085.60x = 15,293.60 × 6,369.20
  4. Step 4: Simplify right side
    11,085.60x = 97,407,997.12
  5. Step 5: Solve for x
    x = 97,407,997.12/11,085.60
  6. Step 6: Final answer
    x = 8,786.89

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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.