Home / 11,669.81-16,099.12-7,191.92

Finding the Fourth Proportional to 11,669.81, 16,099.12 and 7,191.92

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Solution

The fourth proportional to 11,669.81, 16,099.12 and 7,191.92 is: 9,921.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,669.81 : 16,099.12 = 7,191.92 : x
  2. Step 2: Convert to fraction form
    11,669.81/16,099.12 = 7,191.92/x
  3. Step 3: Cross multiply
    11,669.81x = 16,099.12 × 7,191.92
  4. Step 4: Simplify right side
    11,669.81x = 115,783,632.35
  5. Step 5: Solve for x
    x = 115,783,632.35/11,669.81
  6. Step 6: Final answer
    x = 9,921.64

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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.