Home / 12,781.43-19,200.09-9,107.27

Finding the Fourth Proportional to 12,781.43, 19,200.09 and 9,107.27

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Solution

The fourth proportional to 12,781.43, 19,200.09 and 9,107.27 is: 13,680.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781.43 : 19,200.09 = 9,107.27 : x
  2. Step 2: Convert to fraction form
    12,781.43/19,200.09 = 9,107.27/x
  3. Step 3: Cross multiply
    12,781.43x = 19,200.09 × 9,107.27
  4. Step 4: Simplify right side
    12,781.43x = 174,860,307.65
  5. Step 5: Solve for x
    x = 174,860,307.65/12,781.43
  6. Step 6: Final answer
    x = 13,680.81

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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.