Home / 18,123.40-27,187.80-6,435.64

Finding the Fourth Proportional to 18,123.40, 27,187.80 and 6,435.64

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Solution

The fourth proportional to 18,123.40, 27,187.80 and 6,435.64 is: 9,654.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.40 : 27,187.80 = 6,435.64 : x
  2. Step 2: Convert to fraction form
    18,123.40/27,187.80 = 6,435.64/x
  3. Step 3: Cross multiply
    18,123.40x = 27,187.80 × 6,435.64
  4. Step 4: Simplify right side
    18,123.40x = 174,970,893.19
  5. Step 5: Solve for x
    x = 174,970,893.19/18,123.40
  6. Step 6: Final answer
    x = 9,654.42

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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.