Home / 12,123.88-18,177.78-4,729.04

Finding the Fourth Proportional to 12,123.88, 18,177.78 and 4,729.04

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Solution

The fourth proportional to 12,123.88, 18,177.78 and 4,729.04 is: 7,090.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.88 : 18,177.78 = 4,729.04 : x
  2. Step 2: Convert to fraction form
    12,123.88/18,177.78 = 4,729.04/x
  3. Step 3: Cross multiply
    12,123.88x = 18,177.78 × 4,729.04
  4. Step 4: Simplify right side
    12,123.88x = 85,963,448.73
  5. Step 5: Solve for x
    x = 85,963,448.73/12,123.88
  6. Step 6: Final answer
    x = 7,090.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.