Home / 11,720.45-17,564.26-8,418.08

Finding the Fourth Proportional to 11,720.45, 17,564.26 and 8,418.08

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Solution

The fourth proportional to 11,720.45, 17,564.26 and 8,418.08 is: 12,615.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.45 : 17,564.26 = 8,418.08 : x
  2. Step 2: Convert to fraction form
    11,720.45/17,564.26 = 8,418.08/x
  3. Step 3: Cross multiply
    11,720.45x = 17,564.26 × 8,418.08
  4. Step 4: Simplify right side
    11,720.45x = 147,857,285.67
  5. Step 5: Solve for x
    x = 147,857,285.67/11,720.45
  6. Step 6: Final answer
    x = 12,615.33

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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.