Home / 13,677.80-20,516.86-4,912.71

Finding the Fourth Proportional to 13,677.80, 20,516.86 and 4,912.71

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Solution

The fourth proportional to 13,677.80, 20,516.86 and 4,912.71 is: 7,369.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.80 : 20,516.86 = 4,912.71 : x
  2. Step 2: Convert to fraction form
    13,677.80/20,516.86 = 4,912.71/x
  3. Step 3: Cross multiply
    13,677.80x = 20,516.86 × 4,912.71
  4. Step 4: Simplify right side
    13,677.80x = 100,793,280.71
  5. Step 5: Solve for x
    x = 100,793,280.71/13,677.80
  6. Step 6: Final answer
    x = 7,369.12

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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.