Home / 18,914.40-28,374.66-6,435.54

Finding the Fourth Proportional to 18,914.40, 28,374.66 and 6,435.54

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Solution

The fourth proportional to 18,914.40, 28,374.66 and 6,435.54 is: 9,654.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.40 : 28,374.66 = 6,435.54 : x
  2. Step 2: Convert to fraction form
    18,914.40/28,374.66 = 6,435.54/x
  3. Step 3: Cross multiply
    18,914.40x = 28,374.66 × 6,435.54
  4. Step 4: Simplify right side
    18,914.40x = 182,606,259.42
  5. Step 5: Solve for x
    x = 182,606,259.42/18,914.40
  6. Step 6: Final answer
    x = 9,654.35

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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.