Home / 20,896.32-28,836.90-11,464.68

Finding the Fourth Proportional to 20,896.32, 28,836.90 and 11,464.68

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Solution

The fourth proportional to 20,896.32, 28,836.90 and 11,464.68 is: 15,821.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.32 : 28,836.90 = 11,464.68 : x
  2. Step 2: Convert to fraction form
    20,896.32/28,836.90 = 11,464.68/x
  3. Step 3: Cross multiply
    20,896.32x = 28,836.90 × 11,464.68
  4. Step 4: Simplify right side
    20,896.32x = 330,605,830.69
  5. Step 5: Solve for x
    x = 330,605,830.69/20,896.32
  6. Step 6: Final answer
    x = 15,821.25

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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.