Home / 20,464.35-28,240.50-11,511.86

Finding the Fourth Proportional to 20,464.35, 28,240.50 and 11,511.86

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Solution

The fourth proportional to 20,464.35, 28,240.50 and 11,511.86 is: 15,886.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.35 : 28,240.50 = 11,511.86 : x
  2. Step 2: Convert to fraction form
    20,464.35/28,240.50 = 11,511.86/x
  3. Step 3: Cross multiply
    20,464.35x = 28,240.50 × 11,511.86
  4. Step 4: Simplify right side
    20,464.35x = 325,100,541.13
  5. Step 5: Solve for x
    x = 325,100,541.13/20,464.35
  6. Step 6: Final answer
    x = 15,886.19

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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.