Home / 20,676.56-28,533.76-11,245.14

Finding the Fourth Proportional to 20,676.56, 28,533.76 and 11,245.14

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Solution

The fourth proportional to 20,676.56, 28,533.76 and 11,245.14 is: 15,518.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.56 : 28,533.76 = 11,245.14 : x
  2. Step 2: Convert to fraction form
    20,676.56/28,533.76 = 11,245.14/x
  3. Step 3: Cross multiply
    20,676.56x = 28,533.76 × 11,245.14
  4. Step 4: Simplify right side
    20,676.56x = 320,866,125.93
  5. Step 5: Solve for x
    x = 320,866,125.93/20,676.56
  6. Step 6: Final answer
    x = 15,518.35

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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.