Home / 13,150.77-18,147.38-7,181.28

Finding the Fourth Proportional to 13,150.77, 18,147.38 and 7,181.28

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Solution

The fourth proportional to 13,150.77, 18,147.38 and 7,181.28 is: 9,909.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,150.77 : 18,147.38 = 7,181.28 : x
  2. Step 2: Convert to fraction form
    13,150.77/18,147.38 = 7,181.28/x
  3. Step 3: Cross multiply
    13,150.77x = 18,147.38 × 7,181.28
  4. Step 4: Simplify right side
    13,150.77x = 130,321,381.14
  5. Step 5: Solve for x
    x = 130,321,381.14/13,150.77
  6. Step 6: Final answer
    x = 9,909.79

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Half scale
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Double scale
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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.