Home / 13,908.11-20,868.99-6,513.08

Finding the Fourth Proportional to 13,908.11, 20,868.99 and 6,513.08

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Solution

The fourth proportional to 13,908.11, 20,868.99 and 6,513.08 is: 9,772.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.11 : 20,868.99 = 6,513.08 : x
  2. Step 2: Convert to fraction form
    13,908.11/20,868.99 = 6,513.08/x
  3. Step 3: Cross multiply
    13,908.11x = 20,868.99 × 6,513.08
  4. Step 4: Simplify right side
    13,908.11x = 135,921,485.34
  5. Step 5: Solve for x
    x = 135,921,485.34/13,908.11
  6. Step 6: Final answer
    x = 9,772.83

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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.