Home / 12,280.87-16,947.72-6,975.79

Finding the Fourth Proportional to 12,280.87, 16,947.72 and 6,975.79

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Solution

The fourth proportional to 12,280.87, 16,947.72 and 6,975.79 is: 9,626.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.87 : 16,947.72 = 6,975.79 : x
  2. Step 2: Convert to fraction form
    12,280.87/16,947.72 = 6,975.79/x
  3. Step 3: Cross multiply
    12,280.87x = 16,947.72 × 6,975.79
  4. Step 4: Simplify right side
    12,280.87x = 118,223,735.70
  5. Step 5: Solve for x
    x = 118,223,735.70/12,280.87
  6. Step 6: Final answer
    x = 9,626.66

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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.