Home / 13,283.23-19,920.19-3,920.76

Finding the Fourth Proportional to 13,283.23, 19,920.19 and 3,920.76

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Solution

The fourth proportional to 13,283.23, 19,920.19 and 3,920.76 is: 5,879.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.23 : 19,920.19 = 3,920.76 : x
  2. Step 2: Convert to fraction form
    13,283.23/19,920.19 = 3,920.76/x
  3. Step 3: Cross multiply
    13,283.23x = 19,920.19 × 3,920.76
  4. Step 4: Simplify right side
    13,283.23x = 78,102,284.14
  5. Step 5: Solve for x
    x = 78,102,284.14/13,283.23
  6. Step 6: Final answer
    x = 5,879.77

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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.