Home / 12,391.38-18,561.96-6,132.51

Finding the Fourth Proportional to 12,391.38, 18,561.96 and 6,132.51

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Solution

The fourth proportional to 12,391.38, 18,561.96 and 6,132.51 is: 9,186.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.38 : 18,561.96 = 6,132.51 : x
  2. Step 2: Convert to fraction form
    12,391.38/18,561.96 = 6,132.51/x
  3. Step 3: Cross multiply
    12,391.38x = 18,561.96 × 6,132.51
  4. Step 4: Simplify right side
    12,391.38x = 113,831,405.32
  5. Step 5: Solve for x
    x = 113,831,405.32/12,391.38
  6. Step 6: Final answer
    x = 9,186.34

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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.