Home / 30,429.80-41,991.12-17,000.39

Finding the Fourth Proportional to 30,429.80, 41,991.12 and 17,000.39

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Solution

The fourth proportional to 30,429.80, 41,991.12 and 17,000.39 is: 23,459.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,429.80 : 41,991.12 = 17,000.39 : x
  2. Step 2: Convert to fraction form
    30,429.80/41,991.12 = 17,000.39/x
  3. Step 3: Cross multiply
    30,429.80x = 41,991.12 × 17,000.39
  4. Step 4: Simplify right side
    30,429.80x = 713,865,416.54
  5. Step 5: Solve for x
    x = 713,865,416.54/30,429.80
  6. Step 6: Final answer
    x = 23,459.42

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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.