Home / 12,141.60-18,212.40-4,351.20

Finding the Fourth Proportional to 12,141.60, 18,212.40 and 4,351.20

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Solution

The fourth proportional to 12,141.60, 18,212.40 and 4,351.20 is: 6,526.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,141.60 : 18,212.40 = 4,351.20 : x
  2. Step 2: Convert to fraction form
    12,141.60/18,212.40 = 4,351.20/x
  3. Step 3: Cross multiply
    12,141.60x = 18,212.40 × 4,351.20
  4. Step 4: Simplify right side
    12,141.60x = 79,245,794.88
  5. Step 5: Solve for x
    x = 79,245,794.88/12,141.60
  6. Step 6: Final answer
    x = 6,526.80

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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.