Home / 30,429.52-41,990.34-16,999.72

Finding the Fourth Proportional to 30,429.52, 41,990.34 and 16,999.72

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Solution

The fourth proportional to 30,429.52, 41,990.34 and 16,999.72 is: 23,458.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,429.52 : 41,990.34 = 16,999.72 : x
  2. Step 2: Convert to fraction form
    30,429.52/41,990.34 = 16,999.72/x
  3. Step 3: Cross multiply
    30,429.52x = 41,990.34 × 16,999.72
  4. Step 4: Simplify right side
    30,429.52x = 713,824,022.70
  5. Step 5: Solve for x
    x = 713,824,022.70/30,429.52
  6. Step 6: Final answer
    x = 23,458.27

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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.