Home / 20,332.42-28,059.35-11,379.89

Finding the Fourth Proportional to 20,332.42, 28,059.35 and 11,379.89

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Solution

The fourth proportional to 20,332.42, 28,059.35 and 11,379.89 is: 15,704.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.42 : 28,059.35 = 11,379.89 : x
  2. Step 2: Convert to fraction form
    20,332.42/28,059.35 = 11,379.89/x
  3. Step 3: Cross multiply
    20,332.42x = 28,059.35 × 11,379.89
  4. Step 4: Simplify right side
    20,332.42x = 319,312,329.72
  5. Step 5: Solve for x
    x = 319,312,329.72/20,332.42
  6. Step 6: Final answer
    x = 15,704.59

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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.