Home / 28,237.20-38,969.64-15,666

Finding the Fourth Proportional to 28,237.20, 38,969.64 and 15,666

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Solution

The fourth proportional to 28,237.20, 38,969.64 and 15,666 is: 21,620.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.20 : 38,969.64 = 15,666 : x
  2. Step 2: Convert to fraction form
    28,237.20/38,969.64 = 15,666/x
  3. Step 3: Cross multiply
    28,237.20x = 38,969.64 × 15,666
  4. Step 4: Simplify right side
    28,237.20x = 610,498,380.24
  5. Step 5: Solve for x
    x = 610,498,380.24/28,237.20
  6. Step 6: Final answer
    x = 21,620.36

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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.