Home / 13,390.62-18,481.23-12,800.04

Finding the Fourth Proportional to 13,390.62, 18,481.23 and 12,800.04

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Solution

The fourth proportional to 13,390.62, 18,481.23 and 12,800.04 is: 17,666.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.62 : 18,481.23 = 12,800.04 : x
  2. Step 2: Convert to fraction form
    13,390.62/18,481.23 = 12,800.04/x
  3. Step 3: Cross multiply
    13,390.62x = 18,481.23 × 12,800.04
  4. Step 4: Simplify right side
    13,390.62x = 236,560,483.25
  5. Step 5: Solve for x
    x = 236,560,483.25/13,390.62
  6. Step 6: Final answer
    x = 17,666.13

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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.