Home / 13,583.09-18,743.40-7,613.49

Finding the Fourth Proportional to 13,583.09, 18,743.40 and 7,613.49

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Solution

The fourth proportional to 13,583.09, 18,743.40 and 7,613.49 is: 10,505.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.09 : 18,743.40 = 7,613.49 : x
  2. Step 2: Convert to fraction form
    13,583.09/18,743.40 = 7,613.49/x
  3. Step 3: Cross multiply
    13,583.09x = 18,743.40 × 7,613.49
  4. Step 4: Simplify right side
    13,583.09x = 142,702,758.75
  5. Step 5: Solve for x
    x = 142,702,758.75/13,583.09
  6. Step 6: Final answer
    x = 10,505.91

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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.