Home / 20,513.21-30,757.51-9,405.98

Finding the Fourth Proportional to 20,513.21, 30,757.51 and 9,405.98

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Solution

The fourth proportional to 20,513.21, 30,757.51 and 9,405.98 is: 14,103.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.21 : 30,757.51 = 9,405.98 : x
  2. Step 2: Convert to fraction form
    20,513.21/30,757.51 = 9,405.98/x
  3. Step 3: Cross multiply
    20,513.21x = 30,757.51 × 9,405.98
  4. Step 4: Simplify right side
    20,513.21x = 289,304,530.82
  5. Step 5: Solve for x
    x = 289,304,530.82/20,513.21
  6. Step 6: Final answer
    x = 14,103.33

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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.