Home / 30,987.38-46,481.61-12,519.38

Finding the Fourth Proportional to 30,987.38, 46,481.61 and 12,519.38

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Solution

The fourth proportional to 30,987.38, 46,481.61 and 12,519.38 is: 18,779.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,987.38 : 46,481.61 = 12,519.38 : x
  2. Step 2: Convert to fraction form
    30,987.38/46,481.61 = 12,519.38/x
  3. Step 3: Cross multiply
    30,987.38x = 46,481.61 × 12,519.38
  4. Step 4: Simplify right side
    30,987.38x = 581,920,938.60
  5. Step 5: Solve for x
    x = 581,920,938.60/30,987.38
  6. Step 6: Final answer
    x = 18,779.29

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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.