Home / 13,448.48-18,558.56-7,782.44

Finding the Fourth Proportional to 13,448.48, 18,558.56 and 7,782.44

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Solution

The fourth proportional to 13,448.48, 18,558.56 and 7,782.44 is: 10,739.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.48 : 18,558.56 = 7,782.44 : x
  2. Step 2: Convert to fraction form
    13,448.48/18,558.56 = 7,782.44/x
  3. Step 3: Cross multiply
    13,448.48x = 18,558.56 × 7,782.44
  4. Step 4: Simplify right side
    13,448.48x = 144,430,747.98
  5. Step 5: Solve for x
    x = 144,430,747.98/13,448.48
  6. Step 6: Final answer
    x = 10,739.56

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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.