Home / 12,418.32-17,143.62-9,579.32

Finding the Fourth Proportional to 12,418.32, 17,143.62 and 9,579.32

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Solution

The fourth proportional to 12,418.32, 17,143.62 and 9,579.32 is: 13,224.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,418.32 : 17,143.62 = 9,579.32 : x
  2. Step 2: Convert to fraction form
    12,418.32/17,143.62 = 9,579.32/x
  3. Step 3: Cross multiply
    12,418.32x = 17,143.62 × 9,579.32
  4. Step 4: Simplify right side
    12,418.32x = 164,224,170.25
  5. Step 5: Solve for x
    x = 164,224,170.25/12,418.32
  6. Step 6: Final answer
    x = 13,224.35

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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.