Home / 20,777.49-28,662.96-15,103.44

Finding the Fourth Proportional to 20,777.49, 28,662.96 and 15,103.44

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Solution

The fourth proportional to 20,777.49, 28,662.96 and 15,103.44 is: 20,835.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.49 : 28,662.96 = 15,103.44 : x
  2. Step 2: Convert to fraction form
    20,777.49/28,662.96 = 15,103.44/x
  3. Step 3: Cross multiply
    20,777.49x = 28,662.96 × 15,103.44
  4. Step 4: Simplify right side
    20,777.49x = 432,909,296.58
  5. Step 5: Solve for x
    x = 432,909,296.58/20,777.49
  6. Step 6: Final answer
    x = 20,835.50

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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.