Home / 13,039.18-19,558.56-3,178.44

Finding the Fourth Proportional to 13,039.18, 19,558.56 and 3,178.44

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Solution

The fourth proportional to 13,039.18, 19,558.56 and 3,178.44 is: 4,767.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,039.18 : 19,558.56 = 3,178.44 : x
  2. Step 2: Convert to fraction form
    13,039.18/19,558.56 = 3,178.44/x
  3. Step 3: Cross multiply
    13,039.18x = 19,558.56 × 3,178.44
  4. Step 4: Simplify right side
    13,039.18x = 62,165,721.37
  5. Step 5: Solve for x
    x = 62,165,721.37/13,039.18
  6. Step 6: Final answer
    x = 4,767.61

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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.