Home / 12,883.92-19,343.16-7,628.64

Finding the Fourth Proportional to 12,883.92, 19,343.16 and 7,628.64

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Solution

The fourth proportional to 12,883.92, 19,343.16 and 7,628.64 is: 11,453.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,883.92 : 19,343.16 = 7,628.64 : x
  2. Step 2: Convert to fraction form
    12,883.92/19,343.16 = 7,628.64/x
  3. Step 3: Cross multiply
    12,883.92x = 19,343.16 × 7,628.64
  4. Step 4: Simplify right side
    12,883.92x = 147,562,004.10
  5. Step 5: Solve for x
    x = 147,562,004.10/12,883.92
  6. Step 6: Final answer
    x = 11,453.19

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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.