Home / 12,492.32-18,739.79-4,169.43

Finding the Fourth Proportional to 12,492.32, 18,739.79 and 4,169.43

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Solution

The fourth proportional to 12,492.32, 18,739.79 and 4,169.43 is: 6,254.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.32 : 18,739.79 = 4,169.43 : x
  2. Step 2: Convert to fraction form
    12,492.32/18,739.79 = 4,169.43/x
  3. Step 3: Cross multiply
    12,492.32x = 18,739.79 × 4,169.43
  4. Step 4: Simplify right side
    12,492.32x = 78,134,221.77
  5. Step 5: Solve for x
    x = 78,134,221.77/12,492.32
  6. Step 6: Final answer
    x = 6,254.58

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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.