Home / 11,190.22-15,438.81-6,471.16

Finding the Fourth Proportional to 11,190.22, 15,438.81 and 6,471.16

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Solution

The fourth proportional to 11,190.22, 15,438.81 and 6,471.16 is: 8,928.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.22 : 15,438.81 = 6,471.16 : x
  2. Step 2: Convert to fraction form
    11,190.22/15,438.81 = 6,471.16/x
  3. Step 3: Cross multiply
    11,190.22x = 15,438.81 × 6,471.16
  4. Step 4: Simplify right side
    11,190.22x = 99,907,009.72
  5. Step 5: Solve for x
    x = 99,907,009.72/11,190.22
  6. Step 6: Final answer
    x = 8,928.06

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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.