Home / 13,177.69-18,185.51-8,145.36

Finding the Fourth Proportional to 13,177.69, 18,185.51 and 8,145.36

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Solution

The fourth proportional to 13,177.69, 18,185.51 and 8,145.36 is: 11,240.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.69 : 18,185.51 = 8,145.36 : x
  2. Step 2: Convert to fraction form
    13,177.69/18,185.51 = 8,145.36/x
  3. Step 3: Cross multiply
    13,177.69x = 18,185.51 × 8,145.36
  4. Step 4: Simplify right side
    13,177.69x = 148,127,546.10
  5. Step 5: Solve for x
    x = 148,127,546.10/13,177.69
  6. Step 6: Final answer
    x = 11,240.78

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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.