Home / 20,836.99-28,749.36-11,881.23

Finding the Fourth Proportional to 20,836.99, 28,749.36 and 11,881.23

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Solution

The fourth proportional to 20,836.99, 28,749.36 and 11,881.23 is: 16,392.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.99 : 28,749.36 = 11,881.23 : x
  2. Step 2: Convert to fraction form
    20,836.99/28,749.36 = 11,881.23/x
  3. Step 3: Cross multiply
    20,836.99x = 28,749.36 × 11,881.23
  4. Step 4: Simplify right side
    20,836.99x = 341,577,758.51
  5. Step 5: Solve for x
    x = 341,577,758.51/20,836.99
  6. Step 6: Final answer
    x = 16,392.86

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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.