Home / 13,581.87-18,743.03-7,613.58

Finding the Fourth Proportional to 13,581.87, 18,743.03 and 7,613.58

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Solution

The fourth proportional to 13,581.87, 18,743.03 and 7,613.58 is: 10,506.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.87 : 18,743.03 = 7,613.58 : x
  2. Step 2: Convert to fraction form
    13,581.87/18,743.03 = 7,613.58/x
  3. Step 3: Cross multiply
    13,581.87x = 18,743.03 × 7,613.58
  4. Step 4: Simplify right side
    13,581.87x = 142,701,558.35
  5. Step 5: Solve for x
    x = 142,701,558.35/13,581.87
  6. Step 6: Final answer
    x = 10,506.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.