Home / 40,521.90-60,787.70-12,438.27

Finding the Fourth Proportional to 40,521.90, 60,787.70 and 12,438.27

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Solution

The fourth proportional to 40,521.90, 60,787.70 and 12,438.27 is: 18,658.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,521.90 : 60,787.70 = 12,438.27 : x
  2. Step 2: Convert to fraction form
    40,521.90/60,787.70 = 12,438.27/x
  3. Step 3: Cross multiply
    40,521.90x = 60,787.70 × 12,438.27
  4. Step 4: Simplify right side
    40,521.90x = 756,093,763.09
  5. Step 5: Solve for x
    x = 756,093,763.09/40,521.90
  6. Step 6: Final answer
    x = 18,658.89

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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.