Home / 15,677.38-23,516.79-3,990.70

Finding the Fourth Proportional to 15,677.38, 23,516.79 and 3,990.70

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Solution

The fourth proportional to 15,677.38, 23,516.79 and 3,990.70 is: 5,986.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,677.38 : 23,516.79 = 3,990.70 : x
  2. Step 2: Convert to fraction form
    15,677.38/23,516.79 = 3,990.70/x
  3. Step 3: Cross multiply
    15,677.38x = 23,516.79 × 3,990.70
  4. Step 4: Simplify right side
    15,677.38x = 93,848,453.85
  5. Step 5: Solve for x
    x = 93,848,453.85/15,677.38
  6. Step 6: Final answer
    x = 5,986.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.