Home / 20,573.78-28,390.22-11,622.26

Finding the Fourth Proportional to 20,573.78, 28,390.22 and 11,622.26

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Solution

The fourth proportional to 20,573.78, 28,390.22 and 11,622.26 is: 16,037.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.78 : 28,390.22 = 11,622.26 : x
  2. Step 2: Convert to fraction form
    20,573.78/28,390.22 = 11,622.26/x
  3. Step 3: Cross multiply
    20,573.78x = 28,390.22 × 11,622.26
  4. Step 4: Simplify right side
    20,573.78x = 329,958,518.30
  5. Step 5: Solve for x
    x = 329,958,518.30/20,573.78
  6. Step 6: Final answer
    x = 16,037.82

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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.