Home / 21,083.20-31,567.20-16,475.20

Finding the Fourth Proportional to 21,083.20, 31,567.20 and 16,475.20

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Solution

The fourth proportional to 21,083.20, 31,567.20 and 16,475.20 is: 24,667.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,083.20 : 31,567.20 = 16,475.20 : x
  2. Step 2: Convert to fraction form
    21,083.20/31,567.20 = 16,475.20/x
  3. Step 3: Cross multiply
    21,083.20x = 31,567.20 × 16,475.20
  4. Step 4: Simplify right side
    21,083.20x = 520,075,933.44
  5. Step 5: Solve for x
    x = 520,075,933.44/21,083.20
  6. Step 6: Final answer
    x = 24,667.79

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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.