Home / 15,579.55-21,499.82-8,506.09

Finding the Fourth Proportional to 15,579.55, 21,499.82 and 8,506.09

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Solution

The fourth proportional to 15,579.55, 21,499.82 and 8,506.09 is: 11,738.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.55 : 21,499.82 = 8,506.09 : x
  2. Step 2: Convert to fraction form
    15,579.55/21,499.82 = 8,506.09/x
  3. Step 3: Cross multiply
    15,579.55x = 21,499.82 × 8,506.09
  4. Step 4: Simplify right side
    15,579.55x = 182,879,403.90
  5. Step 5: Solve for x
    x = 182,879,403.90/15,579.55
  6. Step 6: Final answer
    x = 11,738.43

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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.