Home / 12,748.95-19,123.44-3,983.91

Finding the Fourth Proportional to 12,748.95, 19,123.44 and 3,983.91

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Solution

The fourth proportional to 12,748.95, 19,123.44 and 3,983.91 is: 5,975.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748.95 : 19,123.44 = 3,983.91 : x
  2. Step 2: Convert to fraction form
    12,748.95/19,123.44 = 3,983.91/x
  3. Step 3: Cross multiply
    12,748.95x = 19,123.44 × 3,983.91
  4. Step 4: Simplify right side
    12,748.95x = 76,186,063.85
  5. Step 5: Solve for x
    x = 76,186,063.85/12,748.95
  6. Step 6: Final answer
    x = 5,975.87

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Double scale
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Similar ratio
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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.