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Finding the Fourth Proportional to 18,900.62, 28,351.20 and 6,588.62

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Solution

The fourth proportional to 18,900.62, 28,351.20 and 6,588.62 is: 9,883.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.62 : 28,351.20 = 6,588.62 : x
  2. Step 2: Convert to fraction form
    18,900.62/28,351.20 = 6,588.62/x
  3. Step 3: Cross multiply
    18,900.62x = 28,351.20 × 6,588.62
  4. Step 4: Simplify right side
    18,900.62x = 186,795,283.34
  5. Step 5: Solve for x
    x = 186,795,283.34/18,900.62
  6. Step 6: Final answer
    x = 9,883.02

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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.