Home / 20,523.42-28,321.67-11,570.79

Finding the Fourth Proportional to 20,523.42, 28,321.67 and 11,570.79

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Solution

The fourth proportional to 20,523.42, 28,321.67 and 11,570.79 is: 15,967.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,523.42 : 28,321.67 = 11,570.79 : x
  2. Step 2: Convert to fraction form
    20,523.42/28,321.67 = 11,570.79/x
  3. Step 3: Cross multiply
    20,523.42x = 28,321.67 × 11,570.79
  4. Step 4: Simplify right side
    20,523.42x = 327,704,124.95
  5. Step 5: Solve for x
    x = 327,704,124.95/20,523.42
  6. Step 6: Final answer
    x = 15,967.33

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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.