Home / 30,505.30-45,725.19-19,942.18

Finding the Fourth Proportional to 30,505.30, 45,725.19 and 19,942.18

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Solution

The fourth proportional to 30,505.30, 45,725.19 and 19,942.18 is: 29,891.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,505.30 : 45,725.19 = 19,942.18 : x
  2. Step 2: Convert to fraction form
    30,505.30/45,725.19 = 19,942.18/x
  3. Step 3: Cross multiply
    30,505.30x = 45,725.19 × 19,942.18
  4. Step 4: Simplify right side
    30,505.30x = 911,859,969.51
  5. Step 5: Solve for x
    x = 911,859,969.51/30,505.30
  6. Step 6: Final answer
    x = 29,891.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.