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Finding the Fourth Proportional to 34,338.80, 51,540.60 and 21,216.80

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Solution

The fourth proportional to 34,338.80, 51,540.60 and 21,216.80 is: 31,845.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,338.80 : 51,540.60 = 21,216.80 : x
  2. Step 2: Convert to fraction form
    34,338.80/51,540.60 = 21,216.80/x
  3. Step 3: Cross multiply
    34,338.80x = 51,540.60 × 21,216.80
  4. Step 4: Simplify right side
    34,338.80x = 1,093,526,602.08
  5. Step 5: Solve for x
    x = 1,093,526,602.08/34,338.80
  6. Step 6: Final answer
    x = 31,845.22

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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.