Home / 12,121.26-16,721.43-8,586.30

Finding the Fourth Proportional to 12,121.26, 16,721.43 and 8,586.30

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Solution

The fourth proportional to 12,121.26, 16,721.43 and 8,586.30 is: 11,844.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.26 : 16,721.43 = 8,586.30 : x
  2. Step 2: Convert to fraction form
    12,121.26/16,721.43 = 8,586.30/x
  3. Step 3: Cross multiply
    12,121.26x = 16,721.43 × 8,586.30
  4. Step 4: Simplify right side
    12,121.26x = 143,575,214.41
  5. Step 5: Solve for x
    x = 143,575,214.41/12,121.26
  6. Step 6: Final answer
    x = 11,844.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.