Home / 13,612.87-20,419.31-3,752.25

Finding the Fourth Proportional to 13,612.87, 20,419.31 and 3,752.25

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Solution

The fourth proportional to 13,612.87, 20,419.31 and 3,752.25 is: 5,628.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.87 : 20,419.31 = 3,752.25 : x
  2. Step 2: Convert to fraction form
    13,612.87/20,419.31 = 3,752.25/x
  3. Step 3: Cross multiply
    13,612.87x = 20,419.31 × 3,752.25
  4. Step 4: Simplify right side
    13,612.87x = 76,618,355.95
  5. Step 5: Solve for x
    x = 76,618,355.95/13,612.87
  6. Step 6: Final answer
    x = 5,628.38

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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.