Home / 20,852.16-31,280.82-6,813.60

Finding the Fourth Proportional to 20,852.16, 31,280.82 and 6,813.60

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Solution

The fourth proportional to 20,852.16, 31,280.82 and 6,813.60 is: 10,221.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.16 : 31,280.82 = 6,813.60 : x
  2. Step 2: Convert to fraction form
    20,852.16/31,280.82 = 6,813.60/x
  3. Step 3: Cross multiply
    20,852.16x = 31,280.82 × 6,813.60
  4. Step 4: Simplify right side
    20,852.16x = 213,134,995.15
  5. Step 5: Solve for x
    x = 213,134,995.15/20,852.16
  6. Step 6: Final answer
    x = 10,221.24

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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.