Home / 20,966.46-28,934.26-11,406.94

Finding the Fourth Proportional to 20,966.46, 28,934.26 and 11,406.94

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Solution

The fourth proportional to 20,966.46, 28,934.26 and 11,406.94 is: 15,741.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.46 : 28,934.26 = 11,406.94 : x
  2. Step 2: Convert to fraction form
    20,966.46/28,934.26 = 11,406.94/x
  3. Step 3: Cross multiply
    20,966.46x = 28,934.26 × 11,406.94
  4. Step 4: Simplify right side
    20,966.46x = 330,051,367.76
  5. Step 5: Solve for x
    x = 330,051,367.76/20,966.46
  6. Step 6: Final answer
    x = 15,741.87

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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.