Home / 12,128.76-18,193.23-3,363.75

Finding the Fourth Proportional to 12,128.76, 18,193.23 and 3,363.75

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Solution

The fourth proportional to 12,128.76, 18,193.23 and 3,363.75 is: 5,045.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.76 : 18,193.23 = 3,363.75 : x
  2. Step 2: Convert to fraction form
    12,128.76/18,193.23 = 3,363.75/x
  3. Step 3: Cross multiply
    12,128.76x = 18,193.23 × 3,363.75
  4. Step 4: Simplify right side
    12,128.76x = 61,197,477.41
  5. Step 5: Solve for x
    x = 61,197,477.41/12,128.76
  6. Step 6: Final answer
    x = 5,045.65

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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.