Home / 13,245.24-19,872.90-8,309.40

Finding the Fourth Proportional to 13,245.24, 19,872.90 and 8,309.40

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Solution

The fourth proportional to 13,245.24, 19,872.90 and 8,309.40 is: 12,467.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.24 : 19,872.90 = 8,309.40 : x
  2. Step 2: Convert to fraction form
    13,245.24/19,872.90 = 8,309.40/x
  3. Step 3: Cross multiply
    13,245.24x = 19,872.90 × 8,309.40
  4. Step 4: Simplify right side
    13,245.24x = 165,131,875.26
  5. Step 5: Solve for x
    x = 165,131,875.26/13,245.24
  6. Step 6: Final answer
    x = 12,467.26

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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.