Home / 12,131.24-18,167.70-6,921.32

Finding the Fourth Proportional to 12,131.24, 18,167.70 and 6,921.32

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Solution

The fourth proportional to 12,131.24, 18,167.70 and 6,921.32 is: 10,365.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.24 : 18,167.70 = 6,921.32 : x
  2. Step 2: Convert to fraction form
    12,131.24/18,167.70 = 6,921.32/x
  3. Step 3: Cross multiply
    12,131.24x = 18,167.70 × 6,921.32
  4. Step 4: Simplify right side
    12,131.24x = 125,744,465.36
  5. Step 5: Solve for x
    x = 125,744,465.36/12,131.24
  6. Step 6: Final answer
    x = 10,365.34

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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.