Home / 13,611.16-20,420.84-11,260.54

Finding the Fourth Proportional to 13,611.16, 20,420.84 and 11,260.54

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Solution

The fourth proportional to 13,611.16, 20,420.84 and 11,260.54 is: 16,894.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.16 : 20,420.84 = 11,260.54 : x
  2. Step 2: Convert to fraction form
    13,611.16/20,420.84 = 11,260.54/x
  3. Step 3: Cross multiply
    13,611.16x = 20,420.84 × 11,260.54
  4. Step 4: Simplify right side
    13,611.16x = 229,949,685.65
  5. Step 5: Solve for x
    x = 229,949,685.65/13,611.16
  6. Step 6: Final answer
    x = 16,894.20

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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.