Home / 13,072.40-19,579.80-11,613.20

Finding the Fourth Proportional to 13,072.40, 19,579.80 and 11,613.20

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Solution

The fourth proportional to 13,072.40, 19,579.80 and 11,613.20 is: 17,394.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.40 : 19,579.80 = 11,613.20 : x
  2. Step 2: Convert to fraction form
    13,072.40/19,579.80 = 11,613.20/x
  3. Step 3: Cross multiply
    13,072.40x = 19,579.80 × 11,613.20
  4. Step 4: Simplify right side
    13,072.40x = 227,384,133.36
  5. Step 5: Solve for x
    x = 227,384,133.36/13,072.40
  6. Step 6: Final answer
    x = 17,394.21

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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.