Home / 13,581.36-18,742.10-7,613.06

Finding the Fourth Proportional to 13,581.36, 18,742.10 and 7,613.06

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Solution

The fourth proportional to 13,581.36, 18,742.10 and 7,613.06 is: 10,505.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.36 : 18,742.10 = 7,613.06 : x
  2. Step 2: Convert to fraction form
    13,581.36/18,742.10 = 7,613.06/x
  3. Step 3: Cross multiply
    13,581.36x = 18,742.10 × 7,613.06
  4. Step 4: Simplify right side
    13,581.36x = 142,684,600.05
  5. Step 5: Solve for x
    x = 142,684,600.05/13,581.36
  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.