Home / 11,819.95-16,311.63-6,514.78

Finding the Fourth Proportional to 11,819.95, 16,311.63 and 6,514.78

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Solution

The fourth proportional to 11,819.95, 16,311.63 and 6,514.78 is: 8,990.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.95 : 16,311.63 = 6,514.78 : x
  2. Step 2: Convert to fraction form
    11,819.95/16,311.63 = 6,514.78/x
  3. Step 3: Cross multiply
    11,819.95x = 16,311.63 × 6,514.78
  4. Step 4: Simplify right side
    11,819.95x = 106,266,680.89
  5. Step 5: Solve for x
    x = 106,266,680.89/11,819.95
  6. Step 6: Final answer
    x = 8,990.45

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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.