Home / 13,913.92-19,200.90-7,945.60

Finding the Fourth Proportional to 13,913.92, 19,200.90 and 7,945.60

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Solution

The fourth proportional to 13,913.92, 19,200.90 and 7,945.60 is: 10,964.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.92 : 19,200.90 = 7,945.60 : x
  2. Step 2: Convert to fraction form
    13,913.92/19,200.90 = 7,945.60/x
  3. Step 3: Cross multiply
    13,913.92x = 19,200.90 × 7,945.60
  4. Step 4: Simplify right side
    13,913.92x = 152,562,671.04
  5. Step 5: Solve for x
    x = 152,562,671.04/13,913.92
  6. Step 6: Final answer
    x = 10,964.75

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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.