Home / 13,938.25-20,914.81-6,542.77

Finding the Fourth Proportional to 13,938.25, 20,914.81 and 6,542.77

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Solution

The fourth proportional to 13,938.25, 20,914.81 and 6,542.77 is: 9,817.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.25 : 20,914.81 = 6,542.77 : x
  2. Step 2: Convert to fraction form
    13,938.25/20,914.81 = 6,542.77/x
  3. Step 3: Cross multiply
    13,938.25x = 20,914.81 × 6,542.77
  4. Step 4: Simplify right side
    13,938.25x = 136,840,791.42
  5. Step 5: Solve for x
    x = 136,840,791.42/13,938.25
  6. Step 6: Final answer
    x = 9,817.65

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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.