Home / 20,672.42-28,527.80-11,240.96

Finding the Fourth Proportional to 20,672.42, 28,527.80 and 11,240.96

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Solution

The fourth proportional to 20,672.42, 28,527.80 and 11,240.96 is: 15,512.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.42 : 28,527.80 = 11,240.96 : x
  2. Step 2: Convert to fraction form
    20,672.42/28,527.80 = 11,240.96/x
  3. Step 3: Cross multiply
    20,672.42x = 28,527.80 × 11,240.96
  4. Step 4: Simplify right side
    20,672.42x = 320,679,659.84
  5. Step 5: Solve for x
    x = 320,679,659.84/20,672.42
  6. Step 6: Final answer
    x = 15,512.44

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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.