Home / 20,795.25-28,697.40-11,842.76

Finding the Fourth Proportional to 20,795.25, 28,697.40 and 11,842.76

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Solution

The fourth proportional to 20,795.25, 28,697.40 and 11,842.76 is: 16,342.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.25 : 28,697.40 = 11,842.76 : x
  2. Step 2: Convert to fraction form
    20,795.25/28,697.40 = 11,842.76/x
  3. Step 3: Cross multiply
    20,795.25x = 28,697.40 × 11,842.76
  4. Step 4: Simplify right side
    20,795.25x = 339,856,420.82
  5. Step 5: Solve for x
    x = 339,856,420.82/20,795.25
  6. Step 6: Final answer
    x = 16,342.98

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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.