Home / 38,784.92-58,188.72-12,489.08

Finding the Fourth Proportional to 38,784.92, 58,188.72 and 12,489.08

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Solution

The fourth proportional to 38,784.92, 58,188.72 and 12,489.08 is: 18,737.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,784.92 : 58,188.72 = 12,489.08 : x
  2. Step 2: Convert to fraction form
    38,784.92/58,188.72 = 12,489.08/x
  3. Step 3: Cross multiply
    38,784.92x = 58,188.72 × 12,489.08
  4. Step 4: Simplify right side
    38,784.92x = 726,723,579.18
  5. Step 5: Solve for x
    x = 726,723,579.18/38,784.92
  6. Step 6: Final answer
    x = 18,737.27

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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.