Home / 20,755.41-31,142.25-10,892.40

Finding the Fourth Proportional to 20,755.41, 31,142.25 and 10,892.40

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Solution

The fourth proportional to 20,755.41, 31,142.25 and 10,892.40 is: 16,343.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.41 : 31,142.25 = 10,892.40 : x
  2. Step 2: Convert to fraction form
    20,755.41/31,142.25 = 10,892.40/x
  3. Step 3: Cross multiply
    20,755.41x = 31,142.25 × 10,892.40
  4. Step 4: Simplify right side
    20,755.41x = 339,213,784.07
  5. Step 5: Solve for x
    x = 339,213,784.07/20,755.41
  6. Step 6: Final answer
    x = 16,343.39

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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.