Home / 38,915.82-58,381.94-12,618.51

Finding the Fourth Proportional to 38,915.82, 58,381.94 and 12,618.51

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Solution

The fourth proportional to 38,915.82, 58,381.94 and 12,618.51 is: 18,930.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,915.82 : 58,381.94 = 12,618.51 : x
  2. Step 2: Convert to fraction form
    38,915.82/58,381.94 = 12,618.51/x
  3. Step 3: Cross multiply
    38,915.82x = 58,381.94 × 12,618.51
  4. Step 4: Simplify right side
    38,915.82x = 736,693,030.62
  5. Step 5: Solve for x
    x = 736,693,030.62/38,915.82
  6. Step 6: Final answer
    x = 18,930.43

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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.