Home / 18,629.60-27,920.64-8,747.06

Finding the Fourth Proportional to 18,629.60, 27,920.64 and 8,747.06

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Solution

The fourth proportional to 18,629.60, 27,920.64 and 8,747.06 is: 13,109.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,629.60 : 27,920.64 = 8,747.06 : x
  2. Step 2: Convert to fraction form
    18,629.60/27,920.64 = 8,747.06/x
  3. Step 3: Cross multiply
    18,629.60x = 27,920.64 × 8,747.06
  4. Step 4: Simplify right side
    18,629.60x = 244,223,513.32
  5. Step 5: Solve for x
    x = 244,223,513.32/18,629.60
  6. Step 6: Final answer
    x = 13,109.43

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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.