Home / 13,211.32-19,816.78-3,216.14

Finding the Fourth Proportional to 13,211.32, 19,816.78 and 3,216.14

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Solution

The fourth proportional to 13,211.32, 19,816.78 and 3,216.14 is: 4,824.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.32 : 19,816.78 = 3,216.14 : x
  2. Step 2: Convert to fraction form
    13,211.32/19,816.78 = 3,216.14/x
  3. Step 3: Cross multiply
    13,211.32x = 19,816.78 × 3,216.14
  4. Step 4: Simplify right side
    13,211.32x = 63,733,538.83
  5. Step 5: Solve for x
    x = 63,733,538.83/13,211.32
  6. Step 6: Final answer
    x = 4,824.16

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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.