Home / 14,383.72-21,472.87-12,168.78

Finding the Fourth Proportional to 14,383.72, 21,472.87 and 12,168.78

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Solution

The fourth proportional to 14,383.72, 21,472.87 and 12,168.78 is: 18,166.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,383.72 : 21,472.87 = 12,168.78 : x
  2. Step 2: Convert to fraction form
    14,383.72/21,472.87 = 12,168.78/x
  3. Step 3: Cross multiply
    14,383.72x = 21,472.87 × 12,168.78
  4. Step 4: Simplify right side
    14,383.72x = 261,298,631.00
  5. Step 5: Solve for x
    x = 261,298,631.00/14,383.72
  6. Step 6: Final answer
    x = 18,166.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.