Home / 20,435.20-28,201.41-11,482.68

Finding the Fourth Proportional to 20,435.20, 28,201.41 and 11,482.68

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Solution

The fourth proportional to 20,435.20, 28,201.41 and 11,482.68 is: 15,846.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.20 : 28,201.41 = 11,482.68 : x
  2. Step 2: Convert to fraction form
    20,435.20/28,201.41 = 11,482.68/x
  3. Step 3: Cross multiply
    20,435.20x = 28,201.41 × 11,482.68
  4. Step 4: Simplify right side
    20,435.20x = 323,827,766.58
  5. Step 5: Solve for x
    x = 323,827,766.58/20,435.20
  6. Step 6: Final answer
    x = 15,846.57

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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.