Home / 12,445.20-17,166.78-7,406.04

Finding the Fourth Proportional to 12,445.20, 17,166.78 and 7,406.04

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Solution

The fourth proportional to 12,445.20, 17,166.78 and 7,406.04 is: 10,215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.20 : 17,166.78 = 7,406.04 : x
  2. Step 2: Convert to fraction form
    12,445.20/17,166.78 = 7,406.04/x
  3. Step 3: Cross multiply
    12,445.20x = 17,166.78 × 7,406.04
  4. Step 4: Simplify right side
    12,445.20x = 127,137,859.35
  5. Step 5: Solve for x
    x = 127,137,859.35/12,445.20
  6. Step 6: Final answer
    x = 10,215.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.