Home / 13,039.20-19,558.88-3,178.56

Finding the Fourth Proportional to 13,039.20, 19,558.88 and 3,178.56

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Solution

The fourth proportional to 13,039.20, 19,558.88 and 3,178.56 is: 4,767.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,039.20 : 19,558.88 = 3,178.56 : x
  2. Step 2: Convert to fraction form
    13,039.20/19,558.88 = 3,178.56/x
  3. Step 3: Cross multiply
    13,039.20x = 19,558.88 × 3,178.56
  4. Step 4: Simplify right side
    13,039.20x = 62,169,073.61
  5. Step 5: Solve for x
    x = 62,169,073.61/13,039.20
  6. Step 6: Final answer
    x = 4,767.86

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1.5x scale

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.