Home / 19,791.72-27,313.20-12,727.80

Finding the Fourth Proportional to 19,791.72, 27,313.20 and 12,727.80

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Solution

The fourth proportional to 19,791.72, 27,313.20 and 12,727.80 is: 17,564.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.72 : 27,313.20 = 12,727.80 : x
  2. Step 2: Convert to fraction form
    19,791.72/27,313.20 = 12,727.80/x
  3. Step 3: Cross multiply
    19,791.72x = 27,313.20 × 12,727.80
  4. Step 4: Simplify right side
    19,791.72x = 347,636,946.96
  5. Step 5: Solve for x
    x = 347,636,946.96/19,791.72
  6. Step 6: Final answer
    x = 17,564.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.