Home / 13,211.36-19,816.84-3,216.20

Finding the Fourth Proportional to 13,211.36, 19,816.84 and 3,216.20

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Solution

The fourth proportional to 13,211.36, 19,816.84 and 3,216.20 is: 4,824.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.36 : 19,816.84 = 3,216.20 : x
  2. Step 2: Convert to fraction form
    13,211.36/19,816.84 = 3,216.20/x
  3. Step 3: Cross multiply
    13,211.36x = 19,816.84 × 3,216.20
  4. Step 4: Simplify right side
    13,211.36x = 63,734,920.81
  5. Step 5: Solve for x
    x = 63,734,920.81/13,211.36
  6. Step 6: Final answer
    x = 4,824.25

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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.