Home / 11,813.80-17,721.34-4,420.20

Finding the Fourth Proportional to 11,813.80, 17,721.34 and 4,420.20

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Solution

The fourth proportional to 11,813.80, 17,721.34 and 4,420.20 is: 6,630.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.80 : 17,721.34 = 4,420.20 : x
  2. Step 2: Convert to fraction form
    11,813.80/17,721.34 = 4,420.20/x
  3. Step 3: Cross multiply
    11,813.80x = 17,721.34 × 4,420.20
  4. Step 4: Simplify right side
    11,813.80x = 78,331,867.07
  5. Step 5: Solve for x
    x = 78,331,867.07/11,813.80
  6. Step 6: Final answer
    x = 6,630.54

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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.