Home / 12,013.76-18,021.60-4,224.32

Finding the Fourth Proportional to 12,013.76, 18,021.60 and 4,224.32

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Solution

The fourth proportional to 12,013.76, 18,021.60 and 4,224.32 is: 6,336.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,013.76 : 18,021.60 = 4,224.32 : x
  2. Step 2: Convert to fraction form
    12,013.76/18,021.60 = 4,224.32/x
  3. Step 3: Cross multiply
    12,013.76x = 18,021.60 × 4,224.32
  4. Step 4: Simplify right side
    12,013.76x = 76,129,005.31
  5. Step 5: Solve for x
    x = 76,129,005.31/12,013.76
  6. Step 6: Final answer
    x = 6,336.82

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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.