Home / 11,190.45-15,443.64-7,407.03

Finding the Fourth Proportional to 11,190.45, 15,443.64 and 7,407.03

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Solution

The fourth proportional to 11,190.45, 15,443.64 and 7,407.03 is: 10,222.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.45 : 15,443.64 = 7,407.03 : x
  2. Step 2: Convert to fraction form
    11,190.45/15,443.64 = 7,407.03/x
  3. Step 3: Cross multiply
    11,190.45x = 15,443.64 × 7,407.03
  4. Step 4: Simplify right side
    11,190.45x = 114,391,504.79
  5. Step 5: Solve for x
    x = 114,391,504.79/11,190.45
  6. Step 6: Final answer
    x = 10,222.24

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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.