Home / 13,789.99-20,688.23-3,929.41

Finding the Fourth Proportional to 13,789.99, 20,688.23 and 3,929.41

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Solution

The fourth proportional to 13,789.99, 20,688.23 and 3,929.41 is: 5,895.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.99 : 20,688.23 = 3,929.41 : x
  2. Step 2: Convert to fraction form
    13,789.99/20,688.23 = 3,929.41/x
  3. Step 3: Cross multiply
    13,789.99x = 20,688.23 × 3,929.41
  4. Step 4: Simplify right side
    13,789.99x = 81,292,537.84
  5. Step 5: Solve for x
    x = 81,292,537.84/13,789.99
  6. Step 6: Final answer
    x = 5,895.04

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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.