Home / 18,305.40-27,458.10-5,157.60

Finding the Fourth Proportional to 18,305.40, 27,458.10 and 5,157.60

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Solution

The fourth proportional to 18,305.40, 27,458.10 and 5,157.60 is: 7,736.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.40 : 27,458.10 = 5,157.60 : x
  2. Step 2: Convert to fraction form
    18,305.40/27,458.10 = 5,157.60/x
  3. Step 3: Cross multiply
    18,305.40x = 27,458.10 × 5,157.60
  4. Step 4: Simplify right side
    18,305.40x = 141,617,896.56
  5. Step 5: Solve for x
    x = 141,617,896.56/18,305.40
  6. Step 6: Final answer
    x = 7,736.40

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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.