Home / 12,420.74-17,165.22-10,179.08

Finding the Fourth Proportional to 12,420.74, 17,165.22 and 10,179.08

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Solution

The fourth proportional to 12,420.74, 17,165.22 and 10,179.08 is: 14,067.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.74 : 17,165.22 = 10,179.08 : x
  2. Step 2: Convert to fraction form
    12,420.74/17,165.22 = 10,179.08/x
  3. Step 3: Cross multiply
    12,420.74x = 17,165.22 × 10,179.08
  4. Step 4: Simplify right side
    12,420.74x = 174,726,147.60
  5. Step 5: Solve for x
    x = 174,726,147.60/12,420.74
  6. Step 6: Final answer
    x = 14,067.29

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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.