Home / 12,825.36-19,210.91-8,142.89

Finding the Fourth Proportional to 12,825.36, 19,210.91 and 8,142.89

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Solution

The fourth proportional to 12,825.36, 19,210.91 and 8,142.89 is: 12,197.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,825.36 : 19,210.91 = 8,142.89 : x
  2. Step 2: Convert to fraction form
    12,825.36/19,210.91 = 8,142.89/x
  3. Step 3: Cross multiply
    12,825.36x = 19,210.91 × 8,142.89
  4. Step 4: Simplify right side
    12,825.36x = 156,432,190.16
  5. Step 5: Solve for x
    x = 156,432,190.16/12,825.36
  6. Step 6: Final answer
    x = 12,197.10

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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.