Home / 12,412.40-18,612.20-4,617.20

Finding the Fourth Proportional to 12,412.40, 18,612.20 and 4,617.20

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Solution

The fourth proportional to 12,412.40, 18,612.20 and 4,617.20 is: 6,923.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,412.40 : 18,612.20 = 4,617.20 : x
  2. Step 2: Convert to fraction form
    12,412.40/18,612.20 = 4,617.20/x
  3. Step 3: Cross multiply
    12,412.40x = 18,612.20 × 4,617.20
  4. Step 4: Simplify right side
    12,412.40x = 85,936,249.84
  5. Step 5: Solve for x
    x = 85,936,249.84/12,412.40
  6. Step 6: Final answer
    x = 6,923.42

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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.