Home / 30,429.09-41,987.25-16,999.65

Finding the Fourth Proportional to 30,429.09, 41,987.25 and 16,999.65

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Solution

The fourth proportional to 30,429.09, 41,987.25 and 16,999.65 is: 23,456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,429.09 : 41,987.25 = 16,999.65 : x
  2. Step 2: Convert to fraction form
    30,429.09/41,987.25 = 16,999.65/x
  3. Step 3: Cross multiply
    30,429.09x = 41,987.25 × 16,999.65
  4. Step 4: Simplify right side
    30,429.09x = 713,768,554.46
  5. Step 5: Solve for x
    x = 713,768,554.46/30,429.09
  6. Step 6: Final answer
    x = 23,456.78

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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.