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Finding the Fourth Proportional to 12,435.70, 17,161.28 and 6,846.70

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Solution

The fourth proportional to 12,435.70, 17,161.28 and 6,846.70 is: 9,448.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.70 : 17,161.28 = 6,846.70 : x
  2. Step 2: Convert to fraction form
    12,435.70/17,161.28 = 6,846.70/x
  3. Step 3: Cross multiply
    12,435.70x = 17,161.28 × 6,846.70
  4. Step 4: Simplify right side
    12,435.70x = 117,498,135.78
  5. Step 5: Solve for x
    x = 117,498,135.78/12,435.70
  6. Step 6: Final answer
    x = 9,448.45

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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.