Home / 20,777.87-28,673.49-11,346.42

Finding the Fourth Proportional to 20,777.87, 28,673.49 and 11,346.42

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Solution

The fourth proportional to 20,777.87, 28,673.49 and 11,346.42 is: 15,658.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.87 : 28,673.49 = 11,346.42 : x
  2. Step 2: Convert to fraction form
    20,777.87/28,673.49 = 11,346.42/x
  3. Step 3: Cross multiply
    20,777.87x = 28,673.49 × 11,346.42
  4. Step 4: Simplify right side
    20,777.87x = 325,341,460.41
  5. Step 5: Solve for x
    x = 325,341,460.41/20,777.87
  6. Step 6: Final answer
    x = 15,658.08

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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.