Home / 30,945.24-42,703.20-16,797.84

Finding the Fourth Proportional to 30,945.24, 42,703.20 and 16,797.84

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Solution

The fourth proportional to 30,945.24, 42,703.20 and 16,797.84 is: 23,180.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,945.24 : 42,703.20 = 16,797.84 : x
  2. Step 2: Convert to fraction form
    30,945.24/42,703.20 = 16,797.84/x
  3. Step 3: Cross multiply
    30,945.24x = 42,703.20 × 16,797.84
  4. Step 4: Simplify right side
    30,945.24x = 717,321,521.09
  5. Step 5: Solve for x
    x = 717,321,521.09/30,945.24
  6. Step 6: Final answer
    x = 23,180.35

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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.