Home / 31,029.86-42,821.16-16,882.61

Finding the Fourth Proportional to 31,029.86, 42,821.16 and 16,882.61

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Solution

The fourth proportional to 31,029.86, 42,821.16 and 16,882.61 is: 23,297.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,029.86 : 42,821.16 = 16,882.61 : x
  2. Step 2: Convert to fraction form
    31,029.86/42,821.16 = 16,882.61/x
  3. Step 3: Cross multiply
    31,029.86x = 42,821.16 × 16,882.61
  4. Step 4: Simplify right side
    31,029.86x = 722,932,729.92
  5. Step 5: Solve for x
    x = 722,932,729.92/31,029.86
  6. Step 6: Final answer
    x = 23,297.97

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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.