Home / 13,131.48-19,706.40-11,876.64

Finding the Fourth Proportional to 13,131.48, 19,706.40 and 11,876.64

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Solution

The fourth proportional to 13,131.48, 19,706.40 and 11,876.64 is: 17,823.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.48 : 19,706.40 = 11,876.64 : x
  2. Step 2: Convert to fraction form
    13,131.48/19,706.40 = 11,876.64/x
  3. Step 3: Cross multiply
    13,131.48x = 19,706.40 × 11,876.64
  4. Step 4: Simplify right side
    13,131.48x = 234,045,818.50
  5. Step 5: Solve for x
    x = 234,045,818.50/13,131.48
  6. Step 6: Final answer
    x = 17,823.26

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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.