Home / 12,079.20-18,118.80-3,314.10

Finding the Fourth Proportional to 12,079.20, 18,118.80 and 3,314.10

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Solution

The fourth proportional to 12,079.20, 18,118.80 and 3,314.10 is: 4,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.20 : 18,118.80 = 3,314.10 : x
  2. Step 2: Convert to fraction form
    12,079.20/18,118.80 = 3,314.10/x
  3. Step 3: Cross multiply
    12,079.20x = 18,118.80 × 3,314.10
  4. Step 4: Simplify right side
    12,079.20x = 60,047,515.08
  5. Step 5: Solve for x
    x = 60,047,515.08/12,079.20
  6. Step 6: Final answer
    x = 4,971.15

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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.