Home / 20,851.76-28,774.90-11,653.39

Finding the Fourth Proportional to 20,851.76, 28,774.90 and 11,653.39

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Solution

The fourth proportional to 20,851.76, 28,774.90 and 11,653.39 is: 16,081.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.76 : 28,774.90 = 11,653.39 : x
  2. Step 2: Convert to fraction form
    20,851.76/28,774.90 = 11,653.39/x
  3. Step 3: Cross multiply
    20,851.76x = 28,774.90 × 11,653.39
  4. Step 4: Simplify right side
    20,851.76x = 335,325,131.91
  5. Step 5: Solve for x
    x = 335,325,131.91/20,851.76
  6. Step 6: Final answer
    x = 16,081.38

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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.