Home / 12,514.20-18,746.10-7,819.80

Finding the Fourth Proportional to 12,514.20, 18,746.10 and 7,819.80

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Solution

The fourth proportional to 12,514.20, 18,746.10 and 7,819.80 is: 11,713.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,514.20 : 18,746.10 = 7,819.80 : x
  2. Step 2: Convert to fraction form
    12,514.20/18,746.10 = 7,819.80/x
  3. Step 3: Cross multiply
    12,514.20x = 18,746.10 × 7,819.80
  4. Step 4: Simplify right side
    12,514.20x = 146,590,752.78
  5. Step 5: Solve for x
    x = 146,590,752.78/12,514.20
  6. Step 6: Final answer
    x = 11,713.95

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1.5x scale

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.