Home / 13,973.12-20,959.68-4,112.20

Finding the Fourth Proportional to 13,973.12, 20,959.68 and 4,112.20

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Solution

The fourth proportional to 13,973.12, 20,959.68 and 4,112.20 is: 6,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,973.12 : 20,959.68 = 4,112.20 : x
  2. Step 2: Convert to fraction form
    13,973.12/20,959.68 = 4,112.20/x
  3. Step 3: Cross multiply
    13,973.12x = 20,959.68 × 4,112.20
  4. Step 4: Simplify right side
    13,973.12x = 86,190,396.10
  5. Step 5: Solve for x
    x = 86,190,396.10/13,973.12
  6. Step 6: Final answer
    x = 6,168.30

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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.