Home / 13,725.79-20,588.68-5,401.28

Finding the Fourth Proportional to 13,725.79, 20,588.68 and 5,401.28

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Solution

The fourth proportional to 13,725.79, 20,588.68 and 5,401.28 is: 8,101.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.79 : 20,588.68 = 5,401.28 : x
  2. Step 2: Convert to fraction form
    13,725.79/20,588.68 = 5,401.28/x
  3. Step 3: Cross multiply
    13,725.79x = 20,588.68 × 5,401.28
  4. Step 4: Simplify right side
    13,725.79x = 111,205,283.73
  5. Step 5: Solve for x
    x = 111,205,283.73/13,725.79
  6. Step 6: Final answer
    x = 8,101.92

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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.