Home / 18,936.27-28,373.25-11,518.38

Finding the Fourth Proportional to 18,936.27, 28,373.25 and 11,518.38

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Solution

The fourth proportional to 18,936.27, 28,373.25 and 11,518.38 is: 17,258.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.27 : 28,373.25 = 11,518.38 : x
  2. Step 2: Convert to fraction form
    18,936.27/28,373.25 = 11,518.38/x
  3. Step 3: Cross multiply
    18,936.27x = 28,373.25 × 11,518.38
  4. Step 4: Simplify right side
    18,936.27x = 326,813,875.34
  5. Step 5: Solve for x
    x = 326,813,875.34/18,936.27
  6. Step 6: Final answer
    x = 17,258.62

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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.