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Finding the Fourth Proportional to 12,080.16, 18,118.08 and 3,313.92

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Solution

The fourth proportional to 12,080.16, 18,118.08 and 3,313.92 is: 4,970.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,080.16 : 18,118.08 = 3,313.92 : x
  2. Step 2: Convert to fraction form
    12,080.16/18,118.08 = 3,313.92/x
  3. Step 3: Cross multiply
    12,080.16x = 18,118.08 × 3,313.92
  4. Step 4: Simplify right side
    12,080.16x = 60,041,867.67
  5. Step 5: Solve for x
    x = 60,041,867.67/12,080.16
  6. Step 6: Final answer
    x = 4,970.29

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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.