Home / 13,786.38-20,681.90-4,426.22

Finding the Fourth Proportional to 13,786.38, 20,681.90 and 4,426.22

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Solution

The fourth proportional to 13,786.38, 20,681.90 and 4,426.22 is: 6,640.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.38 : 20,681.90 = 4,426.22 : x
  2. Step 2: Convert to fraction form
    13,786.38/20,681.90 = 4,426.22/x
  3. Step 3: Cross multiply
    13,786.38x = 20,681.90 × 4,426.22
  4. Step 4: Simplify right side
    13,786.38x = 91,542,639.42
  5. Step 5: Solve for x
    x = 91,542,639.42/13,786.38
  6. Step 6: Final answer
    x = 6,640.08

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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.