Home / 13,180.07-18,188.01-7,871.73

Finding the Fourth Proportional to 13,180.07, 18,188.01 and 7,871.73

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Solution

The fourth proportional to 13,180.07, 18,188.01 and 7,871.73 is: 10,862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.07 : 18,188.01 = 7,871.73 : x
  2. Step 2: Convert to fraction form
    13,180.07/18,188.01 = 7,871.73/x
  3. Step 3: Cross multiply
    13,180.07x = 18,188.01 × 7,871.73
  4. Step 4: Simplify right side
    13,180.07x = 143,171,103.96
  5. Step 5: Solve for x
    x = 143,171,103.96/13,180.07
  6. Step 6: Final answer
    x = 10,862.70

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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.