Home / 30,837.15-42,519.78-22,782.45

Finding the Fourth Proportional to 30,837.15, 42,519.78 and 22,782.45

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Solution

The fourth proportional to 30,837.15, 42,519.78 and 22,782.45 is: 31,413.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,837.15 : 42,519.78 = 22,782.45 : x
  2. Step 2: Convert to fraction form
    30,837.15/42,519.78 = 22,782.45/x
  3. Step 3: Cross multiply
    30,837.15x = 42,519.78 × 22,782.45
  4. Step 4: Simplify right side
    30,837.15x = 968,704,761.86
  5. Step 5: Solve for x
    x = 968,704,761.86/30,837.15
  6. Step 6: Final answer
    x = 31,413.56

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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.