Home / 30,829.25-42,521.46-18,729.68

Finding the Fourth Proportional to 30,829.25, 42,521.46 and 18,729.68

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Solution

The fourth proportional to 30,829.25, 42,521.46 and 18,729.68 is: 25,833.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,829.25 : 42,521.46 = 18,729.68 : x
  2. Step 2: Convert to fraction form
    30,829.25/42,521.46 = 18,729.68/x
  3. Step 3: Cross multiply
    30,829.25x = 42,521.46 × 18,729.68
  4. Step 4: Simplify right side
    30,829.25x = 796,413,126.33
  5. Step 5: Solve for x
    x = 796,413,126.33/30,829.25
  6. Step 6: Final answer
    x = 25,833.04

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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.