Home / 13,613.01-18,772.14-12,819.30

Finding the Fourth Proportional to 13,613.01, 18,772.14 and 12,819.30

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Solution

The fourth proportional to 13,613.01, 18,772.14 and 12,819.30 is: 17,677.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.01 : 18,772.14 = 12,819.30 : x
  2. Step 2: Convert to fraction form
    13,613.01/18,772.14 = 12,819.30/x
  3. Step 3: Cross multiply
    13,613.01x = 18,772.14 × 12,819.30
  4. Step 4: Simplify right side
    13,613.01x = 240,645,694.30
  5. Step 5: Solve for x
    x = 240,645,694.30/13,613.01
  6. Step 6: Final answer
    x = 17,677.63

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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.