Home / 21,425.08-29,537.82-15,043.12

Finding the Fourth Proportional to 21,425.08, 29,537.82 and 15,043.12

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Solution

The fourth proportional to 21,425.08, 29,537.82 and 15,043.12 is: 20,739.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.08 : 29,537.82 = 15,043.12 : x
  2. Step 2: Convert to fraction form
    21,425.08/29,537.82 = 15,043.12/x
  3. Step 3: Cross multiply
    21,425.08x = 29,537.82 × 15,043.12
  4. Step 4: Simplify right side
    21,425.08x = 444,340,970.80
  5. Step 5: Solve for x
    x = 444,340,970.80/21,425.08
  6. Step 6: Final answer
    x = 20,739.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.