Home / 13,947.83-20,920.22-4,087.21

Finding the Fourth Proportional to 13,947.83, 20,920.22 and 4,087.21

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Solution

The fourth proportional to 13,947.83, 20,920.22 and 4,087.21 is: 6,130.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.83 : 20,920.22 = 4,087.21 : x
  2. Step 2: Convert to fraction form
    13,947.83/20,920.22 = 4,087.21/x
  3. Step 3: Cross multiply
    13,947.83x = 20,920.22 × 4,087.21
  4. Step 4: Simplify right side
    13,947.83x = 85,505,207.35
  5. Step 5: Solve for x
    x = 85,505,207.35/13,947.83
  6. Step 6: Final answer
    x = 6,130.36

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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.