Home / 13,723.78-20,536.44-11,881.24

Finding the Fourth Proportional to 13,723.78, 20,536.44 and 11,881.24

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Solution

The fourth proportional to 13,723.78, 20,536.44 and 11,881.24 is: 17,779.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.78 : 20,536.44 = 11,881.24 : x
  2. Step 2: Convert to fraction form
    13,723.78/20,536.44 = 11,881.24/x
  3. Step 3: Cross multiply
    13,723.78x = 20,536.44 × 11,881.24
  4. Step 4: Simplify right side
    13,723.78x = 243,998,372.39
  5. Step 5: Solve for x
    x = 243,998,372.39/13,723.78
  6. Step 6: Final answer
    x = 17,779.24

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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.