Home / 11,590.21-17,385.36-8,142.85

Finding the Fourth Proportional to 11,590.21, 17,385.36 and 8,142.85

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Solution

The fourth proportional to 11,590.21, 17,385.36 and 8,142.85 is: 12,214.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,590.21 : 17,385.36 = 8,142.85 : x
  2. Step 2: Convert to fraction form
    11,590.21/17,385.36 = 8,142.85/x
  3. Step 3: Cross multiply
    11,590.21x = 17,385.36 × 8,142.85
  4. Step 4: Simplify right side
    11,590.21x = 141,566,378.68
  5. Step 5: Solve for x
    x = 141,566,378.68/11,590.21
  6. Step 6: Final answer
    x = 12,214.31

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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.