Home / 13,177.53-18,185.25-7,872.35

Finding the Fourth Proportional to 13,177.53, 18,185.25 and 7,872.35

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Solution

The fourth proportional to 13,177.53, 18,185.25 and 7,872.35 is: 10,863.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.53 : 18,185.25 = 7,872.35 : x
  2. Step 2: Convert to fraction form
    13,177.53/18,185.25 = 7,872.35/x
  3. Step 3: Cross multiply
    13,177.53x = 18,185.25 × 7,872.35
  4. Step 4: Simplify right side
    13,177.53x = 143,160,548.87
  5. Step 5: Solve for x
    x = 143,160,548.87/13,177.53
  6. Step 6: Final answer
    x = 10,863.99

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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.