Home / 13,507.89-20,267.90-8,576.21

Finding the Fourth Proportional to 13,507.89, 20,267.90 and 8,576.21

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Solution

The fourth proportional to 13,507.89, 20,267.90 and 8,576.21 is: 12,868.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.89 : 20,267.90 = 8,576.21 : x
  2. Step 2: Convert to fraction form
    13,507.89/20,267.90 = 8,576.21/x
  3. Step 3: Cross multiply
    13,507.89x = 20,267.90 × 8,576.21
  4. Step 4: Simplify right side
    13,507.89x = 173,821,766.66
  5. Step 5: Solve for x
    x = 173,821,766.66/13,507.89
  6. Step 6: Final answer
    x = 12,868.17

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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.