Home / 12,679.56-19,017.62-3,320.20

Finding the Fourth Proportional to 12,679.56, 19,017.62 and 3,320.20

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Solution

The fourth proportional to 12,679.56, 19,017.62 and 3,320.20 is: 4,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.56 : 19,017.62 = 3,320.20 : x
  2. Step 2: Convert to fraction form
    12,679.56/19,017.62 = 3,320.20/x
  3. Step 3: Cross multiply
    12,679.56x = 19,017.62 × 3,320.20
  4. Step 4: Simplify right side
    12,679.56x = 63,142,301.92
  5. Step 5: Solve for x
    x = 63,142,301.92/12,679.56
  6. Step 6: Final answer
    x = 4,979.85

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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.