Home / 21,164.78-29,207.40-11,733.32

Finding the Fourth Proportional to 21,164.78, 29,207.40 and 11,733.32

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Solution

The fourth proportional to 21,164.78, 29,207.40 and 11,733.32 is: 16,191.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.78 : 29,207.40 = 11,733.32 : x
  2. Step 2: Convert to fraction form
    21,164.78/29,207.40 = 11,733.32/x
  3. Step 3: Cross multiply
    21,164.78x = 29,207.40 × 11,733.32
  4. Step 4: Simplify right side
    21,164.78x = 342,699,770.57
  5. Step 5: Solve for x
    x = 342,699,770.57/21,164.78
  6. Step 6: Final answer
    x = 16,191.98

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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.