Home / 20,605.24-30,857.64-10,729.72

Finding the Fourth Proportional to 20,605.24, 30,857.64 and 10,729.72

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Solution

The fourth proportional to 20,605.24, 30,857.64 and 10,729.72 is: 16,068.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.24 : 30,857.64 = 10,729.72 : x
  2. Step 2: Convert to fraction form
    20,605.24/30,857.64 = 10,729.72/x
  3. Step 3: Cross multiply
    20,605.24x = 30,857.64 × 10,729.72
  4. Step 4: Simplify right side
    20,605.24x = 331,093,837.06
  5. Step 5: Solve for x
    x = 331,093,837.06/20,605.24
  6. Step 6: Final answer
    x = 16,068.43

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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.