Home / 21,029.36-31,549.80-7,179.44

Finding the Fourth Proportional to 21,029.36, 31,549.80 and 7,179.44

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Solution

The fourth proportional to 21,029.36, 31,549.80 and 7,179.44 is: 10,771.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029.36 : 31,549.80 = 7,179.44 : x
  2. Step 2: Convert to fraction form
    21,029.36/31,549.80 = 7,179.44/x
  3. Step 3: Cross multiply
    21,029.36x = 31,549.80 × 7,179.44
  4. Step 4: Simplify right side
    21,029.36x = 226,509,896.11
  5. Step 5: Solve for x
    x = 226,509,896.11/21,029.36
  6. Step 6: Final answer
    x = 10,771.13

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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.