Home / 12,824.40-19,204.20-8,130.12

Finding the Fourth Proportional to 12,824.40, 19,204.20 and 8,130.12

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Solution

The fourth proportional to 12,824.40, 19,204.20 and 8,130.12 is: 12,174.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,824.40 : 19,204.20 = 8,130.12 : x
  2. Step 2: Convert to fraction form
    12,824.40/19,204.20 = 8,130.12/x
  3. Step 3: Cross multiply
    12,824.40x = 19,204.20 × 8,130.12
  4. Step 4: Simplify right side
    12,824.40x = 156,132,450.50
  5. Step 5: Solve for x
    x = 156,132,450.50/12,824.40
  6. Step 6: Final answer
    x = 12,174.64

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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.