Home / 12,659.30-18,987.19-3,298.55

Finding the Fourth Proportional to 12,659.30, 18,987.19 and 3,298.55

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Solution

The fourth proportional to 12,659.30, 18,987.19 and 3,298.55 is: 4,947.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.30 : 18,987.19 = 3,298.55 : x
  2. Step 2: Convert to fraction form
    12,659.30/18,987.19 = 3,298.55/x
  3. Step 3: Cross multiply
    12,659.30x = 18,987.19 × 3,298.55
  4. Step 4: Simplify right side
    12,659.30x = 62,630,234.80
  5. Step 5: Solve for x
    x = 62,630,234.80/12,659.30
  6. Step 6: Final answer
    x = 4,947.37

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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.