Home / 12,445.45-18,665.26-7,169.24

Finding the Fourth Proportional to 12,445.45, 18,665.26 and 7,169.24

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Solution

The fourth proportional to 12,445.45, 18,665.26 and 7,169.24 is: 10,752.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.45 : 18,665.26 = 7,169.24 : x
  2. Step 2: Convert to fraction form
    12,445.45/18,665.26 = 7,169.24/x
  3. Step 3: Cross multiply
    12,445.45x = 18,665.26 × 7,169.24
  4. Step 4: Simplify right side
    12,445.45x = 133,815,728.60
  5. Step 5: Solve for x
    x = 133,815,728.60/12,445.45
  6. Step 6: Final answer
    x = 10,752.18

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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.