Home / 15,677.76-23,516.80-3,991

Finding the Fourth Proportional to 15,677.76, 23,516.80 and 3,991

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Solution

The fourth proportional to 15,677.76, 23,516.80 and 3,991 is: 5,986.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,677.76 : 23,516.80 = 3,991 : x
  2. Step 2: Convert to fraction form
    15,677.76/23,516.80 = 3,991/x
  3. Step 3: Cross multiply
    15,677.76x = 23,516.80 × 3,991
  4. Step 4: Simplify right side
    15,677.76x = 93,855,548.80
  5. Step 5: Solve for x
    x = 93,855,548.80/15,677.76
  6. Step 6: Final answer
    x = 5,986.54

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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.