Home / 21,059.76-29,049.66-12,556.30

Finding the Fourth Proportional to 21,059.76, 29,049.66 and 12,556.30

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Solution

The fourth proportional to 21,059.76, 29,049.66 and 12,556.30 is: 17,320.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.76 : 29,049.66 = 12,556.30 : x
  2. Step 2: Convert to fraction form
    21,059.76/29,049.66 = 12,556.30/x
  3. Step 3: Cross multiply
    21,059.76x = 29,049.66 × 12,556.30
  4. Step 4: Simplify right side
    21,059.76x = 364,756,245.86
  5. Step 5: Solve for x
    x = 364,756,245.86/21,059.76
  6. Step 6: Final answer
    x = 17,320.06

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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.