Home / 12,440.33-17,162.11-8,405.87

Finding the Fourth Proportional to 12,440.33, 17,162.11 and 8,405.87

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Solution

The fourth proportional to 12,440.33, 17,162.11 and 8,405.87 is: 11,596.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.33 : 17,162.11 = 8,405.87 : x
  2. Step 2: Convert to fraction form
    12,440.33/17,162.11 = 8,405.87/x
  3. Step 3: Cross multiply
    12,440.33x = 17,162.11 × 8,405.87
  4. Step 4: Simplify right side
    12,440.33x = 144,262,358.76
  5. Step 5: Solve for x
    x = 144,262,358.76/12,440.33
  6. Step 6: Final answer
    x = 11,596.34

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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.