Home / 13,905.18-20,857.86-3,516.96

Finding the Fourth Proportional to 13,905.18, 20,857.86 and 3,516.96

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Solution

The fourth proportional to 13,905.18, 20,857.86 and 3,516.96 is: 5,275.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.18 : 20,857.86 = 3,516.96 : x
  2. Step 2: Convert to fraction form
    13,905.18/20,857.86 = 3,516.96/x
  3. Step 3: Cross multiply
    13,905.18x = 20,857.86 × 3,516.96
  4. Step 4: Simplify right side
    13,905.18x = 73,356,259.31
  5. Step 5: Solve for x
    x = 73,356,259.31/13,905.18
  6. Step 6: Final answer
    x = 5,275.46

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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.