Home / 20,317.80-28,034.94-11,818.71

Finding the Fourth Proportional to 20,317.80, 28,034.94 and 11,818.71

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Solution

The fourth proportional to 20,317.80, 28,034.94 and 11,818.71 is: 16,307.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.80 : 28,034.94 = 11,818.71 : x
  2. Step 2: Convert to fraction form
    20,317.80/28,034.94 = 11,818.71/x
  3. Step 3: Cross multiply
    20,317.80x = 28,034.94 × 11,818.71
  4. Step 4: Simplify right side
    20,317.80x = 331,336,825.73
  5. Step 5: Solve for x
    x = 331,336,825.73/20,317.80
  6. Step 6: Final answer
    x = 16,307.71

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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.