Home / 21,171.09-31,734.39-7,126.24

Finding the Fourth Proportional to 21,171.09, 31,734.39 and 7,126.24

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Solution

The fourth proportional to 21,171.09, 31,734.39 and 7,126.24 is: 10,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.09 : 31,734.39 = 7,126.24 : x
  2. Step 2: Convert to fraction form
    21,171.09/31,734.39 = 7,126.24/x
  3. Step 3: Cross multiply
    21,171.09x = 31,734.39 × 7,126.24
  4. Step 4: Simplify right side
    21,171.09x = 226,146,879.39
  5. Step 5: Solve for x
    x = 226,146,879.39/21,171.09
  6. Step 6: Final answer
    x = 10,681.87

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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.