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Finding the Fourth Proportional to 18,133.56, 27,200.34 and 4,987.32

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Solution

The fourth proportional to 18,133.56, 27,200.34 and 4,987.32 is: 7,480.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,133.56 : 27,200.34 = 4,987.32 : x
  2. Step 2: Convert to fraction form
    18,133.56/27,200.34 = 4,987.32/x
  3. Step 3: Cross multiply
    18,133.56x = 27,200.34 × 4,987.32
  4. Step 4: Simplify right side
    18,133.56x = 135,656,799.69
  5. Step 5: Solve for x
    x = 135,656,799.69/18,133.56
  6. Step 6: Final answer
    x = 7,480.98

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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.