Home / 12,078.24-16,685.10-11,495.04

Finding the Fourth Proportional to 12,078.24, 16,685.10 and 11,495.04

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Solution

The fourth proportional to 12,078.24, 16,685.10 and 11,495.04 is: 15,879.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.24 : 16,685.10 = 11,495.04 : x
  2. Step 2: Convert to fraction form
    12,078.24/16,685.10 = 11,495.04/x
  3. Step 3: Cross multiply
    12,078.24x = 16,685.10 × 11,495.04
  4. Step 4: Simplify right side
    12,078.24x = 191,795,891.90
  5. Step 5: Solve for x
    x = 191,795,891.90/12,078.24
  6. Step 6: Final answer
    x = 15,879.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.