Home / 13,983.72-20,973.27-4,120.69

Finding the Fourth Proportional to 13,983.72, 20,973.27 and 4,120.69

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Solution

The fourth proportional to 13,983.72, 20,973.27 and 4,120.69 is: 6,180.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,983.72 : 20,973.27 = 4,120.69 : x
  2. Step 2: Convert to fraction form
    13,983.72/20,973.27 = 4,120.69/x
  3. Step 3: Cross multiply
    13,983.72x = 20,973.27 × 4,120.69
  4. Step 4: Simplify right side
    13,983.72x = 86,424,387.64
  5. Step 5: Solve for x
    x = 86,424,387.64/13,983.72
  6. Step 6: Final answer
    x = 6,180.36

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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.