Home / 13,393.07-18,481.75-7,424.68

Finding the Fourth Proportional to 13,393.07, 18,481.75 and 7,424.68

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Solution

The fourth proportional to 13,393.07, 18,481.75 and 7,424.68 is: 10,245.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.07 : 18,481.75 = 7,424.68 : x
  2. Step 2: Convert to fraction form
    13,393.07/18,481.75 = 7,424.68/x
  3. Step 3: Cross multiply
    13,393.07x = 18,481.75 × 7,424.68
  4. Step 4: Simplify right side
    13,393.07x = 137,221,079.59
  5. Step 5: Solve for x
    x = 137,221,079.59/13,393.07
  6. Step 6: Final answer
    x = 10,245.68

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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.