Home / 13,173.42-18,179.68-7,871.30

Finding the Fourth Proportional to 13,173.42, 18,179.68 and 7,871.30

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Solution

The fourth proportional to 13,173.42, 18,179.68 and 7,871.30 is: 10,862.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.42 : 18,179.68 = 7,871.30 : x
  2. Step 2: Convert to fraction form
    13,173.42/18,179.68 = 7,871.30/x
  3. Step 3: Cross multiply
    13,173.42x = 18,179.68 × 7,871.30
  4. Step 4: Simplify right side
    13,173.42x = 143,097,715.18
  5. Step 5: Solve for x
    x = 143,097,715.18/13,173.42
  6. Step 6: Final answer
    x = 10,862.61

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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.