Home / 11,429.20-17,138.32-6,686.70

Finding the Fourth Proportional to 11,429.20, 17,138.32 and 6,686.70

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Solution

The fourth proportional to 11,429.20, 17,138.32 and 6,686.70 is: 10,026.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,429.20 : 17,138.32 = 6,686.70 : x
  2. Step 2: Convert to fraction form
    11,429.20/17,138.32 = 6,686.70/x
  3. Step 3: Cross multiply
    11,429.20x = 17,138.32 × 6,686.70
  4. Step 4: Simplify right side
    11,429.20x = 114,598,804.34
  5. Step 5: Solve for x
    x = 114,598,804.34/11,429.20
  6. Step 6: Final answer
    x = 10,026.84

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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.