Home / 13,629.64-20,345-11,694.28

Finding the Fourth Proportional to 13,629.64, 20,345 and 11,694.28

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Solution

The fourth proportional to 13,629.64, 20,345 and 11,694.28 is: 17,456.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.64 : 20,345 = 11,694.28 : x
  2. Step 2: Convert to fraction form
    13,629.64/20,345 = 11,694.28/x
  3. Step 3: Cross multiply
    13,629.64x = 20,345 × 11,694.28
  4. Step 4: Simplify right side
    13,629.64x = 237,920,126.60
  5. Step 5: Solve for x
    x = 237,920,126.60/13,629.64
  6. Step 6: Final answer
    x = 17,456.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.