Home / 18,452.16-25,455.36-12,078.88

Finding the Fourth Proportional to 18,452.16, 25,455.36 and 12,078.88

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Solution

The fourth proportional to 18,452.16, 25,455.36 and 12,078.88 is: 16,663.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,452.16 : 25,455.36 = 12,078.88 : x
  2. Step 2: Convert to fraction form
    18,452.16/25,455.36 = 12,078.88/x
  3. Step 3: Cross multiply
    18,452.16x = 25,455.36 × 12,078.88
  4. Step 4: Simplify right side
    18,452.16x = 307,472,238.80
  5. Step 5: Solve for x
    x = 307,472,238.80/18,452.16
  6. Step 6: Final answer
    x = 16,663.21

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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.