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Finding the Fourth Proportional to 18,119.30, 27,178.94 and 4,973.60

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Solution

The fourth proportional to 18,119.30, 27,178.94 and 4,973.60 is: 7,460.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,119.30 : 27,178.94 = 4,973.60 : x
  2. Step 2: Convert to fraction form
    18,119.30/27,178.94 = 4,973.60/x
  3. Step 3: Cross multiply
    18,119.30x = 27,178.94 × 4,973.60
  4. Step 4: Simplify right side
    18,119.30x = 135,177,256.37
  5. Step 5: Solve for x
    x = 135,177,256.37/18,119.30
  6. Step 6: Final answer
    x = 7,460.40

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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.