Home / 20,941.47-28,900.44-11,986.92

Finding the Fourth Proportional to 20,941.47, 28,900.44 and 11,986.92

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Solution

The fourth proportional to 20,941.47, 28,900.44 and 11,986.92 is: 16,542.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.47 : 28,900.44 = 11,986.92 : x
  2. Step 2: Convert to fraction form
    20,941.47/28,900.44 = 11,986.92/x
  3. Step 3: Cross multiply
    20,941.47x = 28,900.44 × 11,986.92
  4. Step 4: Simplify right side
    20,941.47x = 346,427,262.24
  5. Step 5: Solve for x
    x = 346,427,262.24/20,941.47
  6. Step 6: Final answer
    x = 16,542.64

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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.