Home / 11,391.16-15,719.34-6,355.60

Finding the Fourth Proportional to 11,391.16, 15,719.34 and 6,355.60

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Solution

The fourth proportional to 11,391.16, 15,719.34 and 6,355.60 is: 8,770.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.16 : 15,719.34 = 6,355.60 : x
  2. Step 2: Convert to fraction form
    11,391.16/15,719.34 = 6,355.60/x
  3. Step 3: Cross multiply
    11,391.16x = 15,719.34 × 6,355.60
  4. Step 4: Simplify right side
    11,391.16x = 99,905,837.30
  5. Step 5: Solve for x
    x = 99,905,837.30/11,391.16
  6. Step 6: Final answer
    x = 8,770.47

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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.