Home / 12,440.58-18,661.50-4,121.34

Finding the Fourth Proportional to 12,440.58, 18,661.50 and 4,121.34

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Solution

The fourth proportional to 12,440.58, 18,661.50 and 4,121.34 is: 6,182.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.58 : 18,661.50 = 4,121.34 : x
  2. Step 2: Convert to fraction form
    12,440.58/18,661.50 = 4,121.34/x
  3. Step 3: Cross multiply
    12,440.58x = 18,661.50 × 4,121.34
  4. Step 4: Simplify right side
    12,440.58x = 76,910,386.41
  5. Step 5: Solve for x
    x = 76,910,386.41/12,440.58
  6. Step 6: Final answer
    x = 6,182.22

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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.