Home / 13,431.96-18,540.06-7,844.28

Finding the Fourth Proportional to 13,431.96, 18,540.06 and 7,844.28

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Solution

The fourth proportional to 13,431.96, 18,540.06 and 7,844.28 is: 10,827.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.96 : 18,540.06 = 7,844.28 : x
  2. Step 2: Convert to fraction form
    13,431.96/18,540.06 = 7,844.28/x
  3. Step 3: Cross multiply
    13,431.96x = 18,540.06 × 7,844.28
  4. Step 4: Simplify right side
    13,431.96x = 145,433,421.86
  5. Step 5: Solve for x
    x = 145,433,421.86/13,431.96
  6. Step 6: Final answer
    x = 10,827.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.