Home / 21,319.52-29,420.57-11,760.33

Finding the Fourth Proportional to 21,319.52, 29,420.57 and 11,760.33

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Solution

The fourth proportional to 21,319.52, 29,420.57 and 11,760.33 is: 16,229.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.52 : 29,420.57 = 11,760.33 : x
  2. Step 2: Convert to fraction form
    21,319.52/29,420.57 = 11,760.33/x
  3. Step 3: Cross multiply
    21,319.52x = 29,420.57 × 11,760.33
  4. Step 4: Simplify right side
    21,319.52x = 345,995,751.72
  5. Step 5: Solve for x
    x = 345,995,751.72/21,319.52
  6. Step 6: Final answer
    x = 16,229.06

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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.