Home / 12,180.07-18,240.91-7,722.24

Finding the Fourth Proportional to 12,180.07, 18,240.91 and 7,722.24

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Solution

The fourth proportional to 12,180.07, 18,240.91 and 7,722.24 is: 11,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.07 : 18,240.91 = 7,722.24 : x
  2. Step 2: Convert to fraction form
    12,180.07/18,240.91 = 7,722.24/x
  3. Step 3: Cross multiply
    12,180.07x = 18,240.91 × 7,722.24
  4. Step 4: Simplify right side
    12,180.07x = 140,860,684.84
  5. Step 5: Solve for x
    x = 140,860,684.84/12,180.07
  6. Step 6: Final answer
    x = 11,564.85

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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.