Home / 30,871.80-46,279.98-11,145.72

Finding the Fourth Proportional to 30,871.80, 46,279.98 and 11,145.72

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Solution

The fourth proportional to 30,871.80, 46,279.98 and 11,145.72 is: 16,708.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,871.80 : 46,279.98 = 11,145.72 : x
  2. Step 2: Convert to fraction form
    30,871.80/46,279.98 = 11,145.72/x
  3. Step 3: Cross multiply
    30,871.80x = 46,279.98 × 11,145.72
  4. Step 4: Simplify right side
    30,871.80x = 515,823,698.69
  5. Step 5: Solve for x
    x = 515,823,698.69/30,871.80
  6. Step 6: Final answer
    x = 16,708.57

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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.