Home / 39,156.96-58,738.32-12,861.12

Finding the Fourth Proportional to 39,156.96, 58,738.32 and 12,861.12

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Solution

The fourth proportional to 39,156.96, 58,738.32 and 12,861.12 is: 19,292.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,156.96 : 58,738.32 = 12,861.12 : x
  2. Step 2: Convert to fraction form
    39,156.96/58,738.32 = 12,861.12/x
  3. Step 3: Cross multiply
    39,156.96x = 58,738.32 × 12,861.12
  4. Step 4: Simplify right side
    39,156.96x = 755,440,582.12
  5. Step 5: Solve for x
    x = 755,440,582.12/39,156.96
  6. Step 6: Final answer
    x = 19,292.63

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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.