Home / 20,839.98-31,272.28-10,845.39

Finding the Fourth Proportional to 20,839.98, 31,272.28 and 10,845.39

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Solution

The fourth proportional to 20,839.98, 31,272.28 and 10,845.39 is: 16,274.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.98 : 31,272.28 = 10,845.39 : x
  2. Step 2: Convert to fraction form
    20,839.98/31,272.28 = 10,845.39/x
  3. Step 3: Cross multiply
    20,839.98x = 31,272.28 × 10,845.39
  4. Step 4: Simplify right side
    20,839.98x = 339,160,162.95
  5. Step 5: Solve for x
    x = 339,160,162.95/20,839.98
  6. Step 6: Final answer
    x = 16,274.49

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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.