Home / 13,668.35-20,488.55-4,781.03

Finding the Fourth Proportional to 13,668.35, 20,488.55 and 4,781.03

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Solution

The fourth proportional to 13,668.35, 20,488.55 and 4,781.03 is: 7,166.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668.35 : 20,488.55 = 4,781.03 : x
  2. Step 2: Convert to fraction form
    13,668.35/20,488.55 = 4,781.03/x
  3. Step 3: Cross multiply
    13,668.35x = 20,488.55 × 4,781.03
  4. Step 4: Simplify right side
    13,668.35x = 97,956,245.86
  5. Step 5: Solve for x
    x = 97,956,245.86/13,668.35
  6. Step 6: Final answer
    x = 7,166.65

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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.