Home / 20,435.75-28,201.35-11,483.24

Finding the Fourth Proportional to 20,435.75, 28,201.35 and 11,483.24

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Solution

The fourth proportional to 20,435.75, 28,201.35 and 11,483.24 is: 15,846.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.75 : 28,201.35 = 11,483.24 : x
  2. Step 2: Convert to fraction form
    20,435.75/28,201.35 = 11,483.24/x
  3. Step 3: Cross multiply
    20,435.75x = 28,201.35 × 11,483.24
  4. Step 4: Simplify right side
    20,435.75x = 323,842,729.37
  5. Step 5: Solve for x
    x = 323,842,729.37/20,435.75
  6. Step 6: Final answer
    x = 15,846.88

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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.