Home / 14,388.45-19,856.60-7,928.36

Finding the Fourth Proportional to 14,388.45, 19,856.60 and 7,928.36

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Solution

The fourth proportional to 14,388.45, 19,856.60 and 7,928.36 is: 10,941.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,388.45 : 19,856.60 = 7,928.36 : x
  2. Step 2: Convert to fraction form
    14,388.45/19,856.60 = 7,928.36/x
  3. Step 3: Cross multiply
    14,388.45x = 19,856.60 × 7,928.36
  4. Step 4: Simplify right side
    14,388.45x = 157,430,134.25
  5. Step 5: Solve for x
    x = 157,430,134.25/14,388.45
  6. Step 6: Final answer
    x = 10,941.43

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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.