Home / 30,813.30-46,219.80-12,080.10

Finding the Fourth Proportional to 30,813.30, 46,219.80 and 12,080.10

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Solution

The fourth proportional to 30,813.30, 46,219.80 and 12,080.10 is: 18,120.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,813.30 : 46,219.80 = 12,080.10 : x
  2. Step 2: Convert to fraction form
    30,813.30/46,219.80 = 12,080.10/x
  3. Step 3: Cross multiply
    30,813.30x = 46,219.80 × 12,080.10
  4. Step 4: Simplify right side
    30,813.30x = 558,339,805.98
  5. Step 5: Solve for x
    x = 558,339,805.98/30,813.30
  6. Step 6: Final answer
    x = 18,120.09

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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.