Home / 30,349.20-41,880.40-16,921.92

Finding the Fourth Proportional to 30,349.20, 41,880.40 and 16,921.92

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Solution

The fourth proportional to 30,349.20, 41,880.40 and 16,921.92 is: 23,351.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,349.20 : 41,880.40 = 16,921.92 : x
  2. Step 2: Convert to fraction form
    30,349.20/41,880.40 = 16,921.92/x
  3. Step 3: Cross multiply
    30,349.20x = 41,880.40 × 16,921.92
  4. Step 4: Simplify right side
    30,349.20x = 708,696,778.37
  5. Step 5: Solve for x
    x = 708,696,778.37/30,349.20
  6. Step 6: Final answer
    x = 23,351.42

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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.