Home / 18,511.43-27,766.53-7,415.17

Finding the Fourth Proportional to 18,511.43, 27,766.53 and 7,415.17

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Solution

The fourth proportional to 18,511.43, 27,766.53 and 7,415.17 is: 11,122.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.43 : 27,766.53 = 7,415.17 : x
  2. Step 2: Convert to fraction form
    18,511.43/27,766.53 = 7,415.17/x
  3. Step 3: Cross multiply
    18,511.43x = 27,766.53 × 7,415.17
  4. Step 4: Simplify right side
    18,511.43x = 205,893,470.84
  5. Step 5: Solve for x
    x = 205,893,470.84/18,511.43
  6. Step 6: Final answer
    x = 11,122.51

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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.