Home / 13,581.87-18,742.90-7,613.53

Finding the Fourth Proportional to 13,581.87, 18,742.90 and 7,613.53

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Solution

The fourth proportional to 13,581.87, 18,742.90 and 7,613.53 is: 10,506.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.87 : 18,742.90 = 7,613.53 : x
  2. Step 2: Convert to fraction form
    13,581.87/18,742.90 = 7,613.53/x
  3. Step 3: Cross multiply
    13,581.87x = 18,742.90 × 7,613.53
  4. Step 4: Simplify right side
    13,581.87x = 142,699,631.44
  5. Step 5: Solve for x
    x = 142,699,631.44/13,581.87
  6. Step 6: Final answer
    x = 10,506.63

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1.5x scale

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.