Home / 13,581.84-20,370.24-4,220.49

Finding the Fourth Proportional to 13,581.84, 20,370.24 and 4,220.49

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Solution

The fourth proportional to 13,581.84, 20,370.24 and 4,220.49 is: 6,329.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.84 : 20,370.24 = 4,220.49 : x
  2. Step 2: Convert to fraction form
    13,581.84/20,370.24 = 4,220.49/x
  3. Step 3: Cross multiply
    13,581.84x = 20,370.24 × 4,220.49
  4. Step 4: Simplify right side
    13,581.84x = 85,972,394.22
  5. Step 5: Solve for x
    x = 85,972,394.22/13,581.84
  6. Step 6: Final answer
    x = 6,329.95

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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.