Home / 30,743.30-42,413.44-18,785.88

Finding the Fourth Proportional to 30,743.30, 42,413.44 and 18,785.88

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Solution

The fourth proportional to 30,743.30, 42,413.44 and 18,785.88 is: 25,916.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,743.30 : 42,413.44 = 18,785.88 : x
  2. Step 2: Convert to fraction form
    30,743.30/42,413.44 = 18,785.88/x
  3. Step 3: Cross multiply
    30,743.30x = 42,413.44 × 18,785.88
  4. Step 4: Simplify right side
    30,743.30x = 796,773,794.23
  5. Step 5: Solve for x
    x = 796,773,794.23/30,743.30
  6. Step 6: Final answer
    x = 25,916.99

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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.