Home / 30,345.40-41,879.76-16,918.84

Finding the Fourth Proportional to 30,345.40, 41,879.76 and 16,918.84

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Solution

The fourth proportional to 30,345.40, 41,879.76 and 16,918.84 is: 23,349.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.40 : 41,879.76 = 16,918.84 : x
  2. Step 2: Convert to fraction form
    30,345.40/41,879.76 = 16,918.84/x
  3. Step 3: Cross multiply
    30,345.40x = 41,879.76 × 16,918.84
  4. Step 4: Simplify right side
    30,345.40x = 708,556,958.68
  5. Step 5: Solve for x
    x = 708,556,958.68/30,345.40
  6. Step 6: Final answer
    x = 23,349.73

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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.