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Finding the Fourth Proportional to 46,016.70, 69,015.60 and 12,728.40

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Solution

The fourth proportional to 46,016.70, 69,015.60 and 12,728.40 is: 19,089.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,016.70 : 69,015.60 = 12,728.40 : x
  2. Step 2: Convert to fraction form
    46,016.70/69,015.60 = 12,728.40/x
  3. Step 3: Cross multiply
    46,016.70x = 69,015.60 × 12,728.40
  4. Step 4: Simplify right side
    46,016.70x = 878,458,163.04
  5. Step 5: Solve for x
    x = 878,458,163.04/46,016.70
  6. Step 6: Final answer
    x = 19,089.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.