Home / 21,310.22-31,965.37-7,271.80

Finding the Fourth Proportional to 21,310.22, 31,965.37 and 7,271.80

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Solution

The fourth proportional to 21,310.22, 31,965.37 and 7,271.80 is: 10,907.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.22 : 31,965.37 = 7,271.80 : x
  2. Step 2: Convert to fraction form
    21,310.22/31,965.37 = 7,271.80/x
  3. Step 3: Cross multiply
    21,310.22x = 31,965.37 × 7,271.80
  4. Step 4: Simplify right side
    21,310.22x = 232,445,679.47
  5. Step 5: Solve for x
    x = 232,445,679.47/21,310.22
  6. Step 6: Final answer
    x = 10,907.71

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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.