Home / 13,785.56-20,681.80-4,426.41

Finding the Fourth Proportional to 13,785.56, 20,681.80 and 4,426.41

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Solution

The fourth proportional to 13,785.56, 20,681.80 and 4,426.41 is: 6,640.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.56 : 20,681.80 = 4,426.41 : x
  2. Step 2: Convert to fraction form
    13,785.56/20,681.80 = 4,426.41/x
  3. Step 3: Cross multiply
    13,785.56x = 20,681.80 × 4,426.41
  4. Step 4: Simplify right side
    13,785.56x = 91,546,126.34
  5. Step 5: Solve for x
    x = 91,546,126.34/13,785.56
  6. Step 6: Final answer
    x = 6,640.73

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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.