Home / 21,556.32-29,749.56-12,126.69

Finding the Fourth Proportional to 21,556.32, 29,749.56 and 12,126.69

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Solution

The fourth proportional to 21,556.32, 29,749.56 and 12,126.69 is: 16,735.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.32 : 29,749.56 = 12,126.69 : x
  2. Step 2: Convert to fraction form
    21,556.32/29,749.56 = 12,126.69/x
  3. Step 3: Cross multiply
    21,556.32x = 29,749.56 × 12,126.69
  4. Step 4: Simplify right side
    21,556.32x = 360,763,691.76
  5. Step 5: Solve for x
    x = 360,763,691.76/21,556.32
  6. Step 6: Final answer
    x = 16,735.87

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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.