Home / 20,435.81-28,201.91-11,482.77

Finding the Fourth Proportional to 20,435.81, 28,201.91 and 11,482.77

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Solution

The fourth proportional to 20,435.81, 28,201.91 and 11,482.77 is: 15,846.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.81 : 28,201.91 = 11,482.77 : x
  2. Step 2: Convert to fraction form
    20,435.81/28,201.91 = 11,482.77/x
  3. Step 3: Cross multiply
    20,435.81x = 28,201.91 × 11,482.77
  4. Step 4: Simplify right side
    20,435.81x = 323,836,046.09
  5. Step 5: Solve for x
    x = 323,836,046.09/20,435.81
  6. Step 6: Final answer
    x = 15,846.50

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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.