Home / 18,381.47-25,359.08-12,005.89

Finding the Fourth Proportional to 18,381.47, 25,359.08 and 12,005.89

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Solution

The fourth proportional to 18,381.47, 25,359.08 and 12,005.89 is: 16,563.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.47 : 25,359.08 = 12,005.89 : x
  2. Step 2: Convert to fraction form
    18,381.47/25,359.08 = 12,005.89/x
  3. Step 3: Cross multiply
    18,381.47x = 25,359.08 × 12,005.89
  4. Step 4: Simplify right side
    18,381.47x = 304,458,324.98
  5. Step 5: Solve for x
    x = 304,458,324.98/18,381.47
  6. Step 6: Final answer
    x = 16,563.33

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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.