Home / 13,173.95-18,181.79-7,510.75

Finding the Fourth Proportional to 13,173.95, 18,181.79 and 7,510.75

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Solution

The fourth proportional to 13,173.95, 18,181.79 and 7,510.75 is: 10,365.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.95 : 18,181.79 = 7,510.75 : x
  2. Step 2: Convert to fraction form
    13,173.95/18,181.79 = 7,510.75/x
  3. Step 3: Cross multiply
    13,173.95x = 18,181.79 × 7,510.75
  4. Step 4: Simplify right side
    13,173.95x = 136,558,879.24
  5. Step 5: Solve for x
    x = 136,558,879.24/13,173.95
  6. Step 6: Final answer
    x = 10,365.83

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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.