Home / 20,966.96-28,934.95-11,407.44

Finding the Fourth Proportional to 20,966.96, 28,934.95 and 11,407.44

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Solution

The fourth proportional to 20,966.96, 28,934.95 and 11,407.44 is: 15,742.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.96 : 28,934.95 = 11,407.44 : x
  2. Step 2: Convert to fraction form
    20,966.96/28,934.95 = 11,407.44/x
  3. Step 3: Cross multiply
    20,966.96x = 28,934.95 × 11,407.44
  4. Step 4: Simplify right side
    20,966.96x = 330,073,706.03
  5. Step 5: Solve for x
    x = 330,073,706.03/20,966.96
  6. Step 6: Final answer
    x = 15,742.56

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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.