Home / 13,300.80-19,927.20-7,749.60

Finding the Fourth Proportional to 13,300.80, 19,927.20 and 7,749.60

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Solution

The fourth proportional to 13,300.80, 19,927.20 and 7,749.60 is: 11,610.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,300.80 : 19,927.20 = 7,749.60 : x
  2. Step 2: Convert to fraction form
    13,300.80/19,927.20 = 7,749.60/x
  3. Step 3: Cross multiply
    13,300.80x = 19,927.20 × 7,749.60
  4. Step 4: Simplify right side
    13,300.80x = 154,427,829.12
  5. Step 5: Solve for x
    x = 154,427,829.12/13,300.80
  6. Step 6: Final answer
    x = 11,610.42

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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.