Home / 12,612.20-18,929.96-6,376.60

Finding the Fourth Proportional to 12,612.20, 18,929.96 and 6,376.60

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Solution

The fourth proportional to 12,612.20, 18,929.96 and 6,376.60 is: 9,570.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.20 : 18,929.96 = 6,376.60 : x
  2. Step 2: Convert to fraction form
    12,612.20/18,929.96 = 6,376.60/x
  3. Step 3: Cross multiply
    12,612.20x = 18,929.96 × 6,376.60
  4. Step 4: Simplify right side
    12,612.20x = 120,708,782.94
  5. Step 5: Solve for x
    x = 120,708,782.94/12,612.20
  6. Step 6: Final answer
    x = 9,570.80

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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.