Home / 30,780.06-46,163.39-8,290.19

Finding the Fourth Proportional to 30,780.06, 46,163.39 and 8,290.19

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Solution

The fourth proportional to 30,780.06, 46,163.39 and 8,290.19 is: 12,433.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,780.06 : 46,163.39 = 8,290.19 : x
  2. Step 2: Convert to fraction form
    30,780.06/46,163.39 = 8,290.19/x
  3. Step 3: Cross multiply
    30,780.06x = 46,163.39 × 8,290.19
  4. Step 4: Simplify right side
    30,780.06x = 382,703,001.88
  5. Step 5: Solve for x
    x = 382,703,001.88/30,780.06
  6. Step 6: Final answer
    x = 12,433.47

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1.5x scale

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.