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Finding the Fourth Proportional to 11,719.16, 16,169.56 and 7,243.08

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Solution

The fourth proportional to 11,719.16, 16,169.56 and 7,243.08 is: 9,993.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,719.16 : 16,169.56 = 7,243.08 : x
  2. Step 2: Convert to fraction form
    11,719.16/16,169.56 = 7,243.08/x
  3. Step 3: Cross multiply
    11,719.16x = 16,169.56 × 7,243.08
  4. Step 4: Simplify right side
    11,719.16x = 117,117,416.64
  5. Step 5: Solve for x
    x = 117,117,416.64/11,719.16
  6. Step 6: Final answer
    x = 9,993.67

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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.