Home / 30,624.40-42,268.26-18,685.18

Finding the Fourth Proportional to 30,624.40, 42,268.26 and 18,685.18

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Solution

The fourth proportional to 30,624.40, 42,268.26 and 18,685.18 is: 25,789.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,624.40 : 42,268.26 = 18,685.18 : x
  2. Step 2: Convert to fraction form
    30,624.40/42,268.26 = 18,685.18/x
  3. Step 3: Cross multiply
    30,624.40x = 42,268.26 × 18,685.18
  4. Step 4: Simplify right side
    30,624.40x = 789,790,046.39
  5. Step 5: Solve for x
    x = 789,790,046.39/30,624.40
  6. Step 6: Final answer
    x = 25,789.57

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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.