Home / 12,581.48-18,880.41-4,790.36

Finding the Fourth Proportional to 12,581.48, 18,880.41 and 4,790.36

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Solution

The fourth proportional to 12,581.48, 18,880.41 and 4,790.36 is: 7,188.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.48 : 18,880.41 = 4,790.36 : x
  2. Step 2: Convert to fraction form
    12,581.48/18,880.41 = 4,790.36/x
  3. Step 3: Cross multiply
    12,581.48x = 18,880.41 × 4,790.36
  4. Step 4: Simplify right side
    12,581.48x = 90,443,960.85
  5. Step 5: Solve for x
    x = 90,443,960.85/12,581.48
  6. Step 6: Final answer
    x = 7,188.66

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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.