Home / 13,921.48-19,215.24-8,613.16

Finding the Fourth Proportional to 13,921.48, 19,215.24 and 8,613.16

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Solution

The fourth proportional to 13,921.48, 19,215.24 and 8,613.16 is: 11,888.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.48 : 19,215.24 = 8,613.16 : x
  2. Step 2: Convert to fraction form
    13,921.48/19,215.24 = 8,613.16/x
  3. Step 3: Cross multiply
    13,921.48x = 19,215.24 × 8,613.16
  4. Step 4: Simplify right side
    13,921.48x = 165,503,936.56
  5. Step 5: Solve for x
    x = 165,503,936.56/13,921.48
  6. Step 6: Final answer
    x = 11,888.39

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Similar ratio
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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.