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Finding the Fourth Proportional to 18,659.81, 27,997.01 and 6,970.30

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Solution

The fourth proportional to 18,659.81, 27,997.01 and 6,970.30 is: 10,458.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,659.81 : 27,997.01 = 6,970.30 : x
  2. Step 2: Convert to fraction form
    18,659.81/27,997.01 = 6,970.30/x
  3. Step 3: Cross multiply
    18,659.81x = 27,997.01 × 6,970.30
  4. Step 4: Simplify right side
    18,659.81x = 195,147,558.80
  5. Step 5: Solve for x
    x = 195,147,558.80/18,659.81
  6. Step 6: Final answer
    x = 10,458.18

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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.