Home / 18,915.24-28,370.34-11,895.96

Finding the Fourth Proportional to 18,915.24, 28,370.34 and 11,895.96

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Solution

The fourth proportional to 18,915.24, 28,370.34 and 11,895.96 is: 17,842.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.24 : 28,370.34 = 11,895.96 : x
  2. Step 2: Convert to fraction form
    18,915.24/28,370.34 = 11,895.96/x
  3. Step 3: Cross multiply
    18,915.24x = 28,370.34 × 11,895.96
  4. Step 4: Simplify right side
    18,915.24x = 337,492,429.83
  5. Step 5: Solve for x
    x = 337,492,429.83/18,915.24
  6. Step 6: Final answer
    x = 17,842.36

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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.