Home / 11,928.81-16,477.26-9,078.87

Finding the Fourth Proportional to 11,928.81, 16,477.26 and 9,078.87

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Solution

The fourth proportional to 11,928.81, 16,477.26 and 9,078.87 is: 12,540.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.81 : 16,477.26 = 9,078.87 : x
  2. Step 2: Convert to fraction form
    11,928.81/16,477.26 = 9,078.87/x
  3. Step 3: Cross multiply
    11,928.81x = 16,477.26 × 9,078.87
  4. Step 4: Simplify right side
    11,928.81x = 149,594,901.50
  5. Step 5: Solve for x
    x = 149,594,901.50/11,928.81
  6. Step 6: Final answer
    x = 12,540.64

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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.