Home / 13,747.40-20,607.06-5,415.96

Finding the Fourth Proportional to 13,747.40, 20,607.06 and 5,415.96

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Solution

The fourth proportional to 13,747.40, 20,607.06 and 5,415.96 is: 8,118.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.40 : 20,607.06 = 5,415.96 : x
  2. Step 2: Convert to fraction form
    13,747.40/20,607.06 = 5,415.96/x
  3. Step 3: Cross multiply
    13,747.40x = 20,607.06 × 5,415.96
  4. Step 4: Simplify right side
    13,747.40x = 111,606,909.64
  5. Step 5: Solve for x
    x = 111,606,909.64/13,747.40
  6. Step 6: Final answer
    x = 8,118.40

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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.