Home / 13,404.16-20,117.30-6,742.55

Finding the Fourth Proportional to 13,404.16, 20,117.30 and 6,742.55

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Solution

The fourth proportional to 13,404.16, 20,117.30 and 6,742.55 is: 10,119.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,404.16 : 20,117.30 = 6,742.55 : x
  2. Step 2: Convert to fraction form
    13,404.16/20,117.30 = 6,742.55/x
  3. Step 3: Cross multiply
    13,404.16x = 20,117.30 × 6,742.55
  4. Step 4: Simplify right side
    13,404.16x = 135,641,918.01
  5. Step 5: Solve for x
    x = 135,641,918.01/13,404.16
  6. Step 6: Final answer
    x = 10,119.39

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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.