Home / 13,744.10-20,620.20-4,385.45

Finding the Fourth Proportional to 13,744.10, 20,620.20 and 4,385.45

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Solution

The fourth proportional to 13,744.10, 20,620.20 and 4,385.45 is: 6,579.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,744.10 : 20,620.20 = 4,385.45 : x
  2. Step 2: Convert to fraction form
    13,744.10/20,620.20 = 4,385.45/x
  3. Step 3: Cross multiply
    13,744.10x = 20,620.20 × 4,385.45
  4. Step 4: Simplify right side
    13,744.10x = 90,428,856.09
  5. Step 5: Solve for x
    x = 90,428,856.09/13,744.10
  6. Step 6: Final answer
    x = 6,579.47

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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.